“ Here the sun, who is the giver of all light, is used as the symbol of the Infinite, giver of all wisdom. The seeker after Truth prays to the Effulgent One to control His dazzling rays, that his eyes, no longer blinded by them, may behold the Truth. Having perceived It, he proclaims: "Now I see that that Effulgent Being and I are one and the same, and my delusion is destroyed." By the light of Truth he is able to discriminate between the real and the unreal, and the knowledge thus gained convinces him that he is one with the Supreme ”

“ In the sight of true wisdom, there is no difference between the creator and the created. Even physical science has come to recognize that cause and effect are but two aspects of one manifestation of energy. He who fails to see this, being engrossed in the visible only, goes from death to death; because he clings to external forms which are perishable. Only the essence which dwells within is unchangeable and imperishable. This knowledge of the oneness of visible and invisible, however, cannot be acquired through sense-perception. It can only be attained by the purified mind. ”

“ XX The Self is subtler than the subtle, greater than the great; It dwells in the heart of each living being. He who is free from desire and free from grief, with mind and senses tranquil, beholds the glory of the Atman. ”

“ The heart must be pure and freed from every unworthy selfish desire; the thought must be indrawn from all external objects; mind and body must be under control; when the whole being thus becomes calm and serene, then it is possible to perceive that effulgent Atman. It is subtler than the subtle, because It is the invisible essence of every thing; and It is greater than the great because It is the boundless, sustaining power of the whole universe; that upon which all existence rests. ”

“ VI But he who is full of discrimination and whose mind is always controlled, his senses are manageable, like the good horses of a driver.
The man whose intellect is not discriminative and who fails to distinguish right from wrong, the real from the unreal, is carried away by his sense passions and desires, just as a driver is carried away by vicious horses over which he has lost control. ”

“ The prevailing note of all Vedic teaching is this: One tremendous Whole becoming the world, and again the world merging in that Whole. It also strives in various ways to define that Source, knowing which all else is known and without which no knowledge can be well established. So here the teacher replies: That which is the eye of the eye, the ear of the ear, that is the inexhaustible river of being which flows on eternally; while bubbles of creation rise on the surface, live for a time, then burst. ”

“ Brahman is the vast ocean of being, on which rise numberless ripples and waves of manifestation. From the smallest atomic form to a Deva or an angel, all spring from that limitless ocean of Brahman, the inexhaustible Source of life. No manifested form of life can be independent of its source, just as no wave, however mighty, can be independent of the ocean. ”

“ When the mind becomes pure and desireless, it takes the upward course and at the time of departing passes out through the imperceptible opening at the crown of the head; but as long as it remains full of desires, its course is downward towards the realms where those desires can be satisfied.
XVII The Purusha, the inner Self, of the size of a thumb, is ever seated in the heart of all living beings. With perseverance man should draw Him out from his body as one draws the inner stalk from a blade of grass. One should know Him as pure and deathless, as pure and deathless. ”

“ Lead us to blessedness by the good path. O Lord! Thou knowest all our deeds, remove all evil and delusion from us. To Thee we offer our prostrations and supplications again and again.
Here ends this Upanishad
This Upanishad is called Isa-Vasya-Upanishad, that which gives Brahma-Vidya or knowledge of the All-pervading Deity. The dominant thought running through it is that we cannot enjoy life or realize true happiness unless we consciously "cover" all with the Omnipresent Lord. If we are not fully conscious of that which sustains our life, how can we live wisely and perform our duties? ”

“ Thus the disciple approached the Master and inquired concerning the cause of life and human activity. Having a sincere longing for Truth he desired to know who really sees and hears, who actuates the apparent physical man. He perceived all about him the phenomenal world, the existence of which he could prove by his senses; but he sought to know the invisible causal world, of which he was now only vaguely conscious. Is mind all-pervading and all-powerful, or is it impelled by some other force, he asked. Who sends forth the vital energy, without which nothing can exist? ”

“ But the wise, knowing the nature of immortality, do not seek the permanent among fleeting things.
Those who are devoid of discrimination and fail to distinguish between real and unreal, the fleeting and the permanent, set their hearts on the changeable things of this world; hence they entangle themselves in the net of insatiable desire, which leads inevitably to disappointment and suffering. To such, death must seem a reality because they identify themselves with that which is born and which dies. ”

“ The special purpose of this Upanishad is to give us the knowledge of the Real, that we may not come under the dominion of the ego by identifying ourselves with our body, mind and senses. Mortals become mortals because they fall under the sway of ego and depend on their own limited physical and mental strength. The lesson of the parable of the Devas and Brahman is that there is no real power, no real doer except God. He is the eye of the eye, the ear of the ear ”

“ Here the Upanishad shows that the only hell is absence of knowledge. As long as man is overpowered by the darkness of ignorance, he is the slave of Nature and must accept whatever comes as the fruit of his thoughts and deeds. When he strays into the path of unreality, the Sages declare that he destroys himself; because he who clings to the perishable body and regards it as his true Self must experience death many times.
IV That One, though motionless, is swifter than the mind. The senses can never overtake It, for It ever goes before. Though immovable, It travels faster than those who run. ”

“ As soon as a man acquires knowledge of the Supreme, he is liberated; but if he fails to attain such knowledge before his Soul is separated from the body, then he must take other bodies and return again and again to this realm of birth and death, until through varied experience he realizes the nature of the Supreme and his relation to Him. ”

“ Then a wise man through the practice of discrimination has seen clearly the distinction between body and Soul, he knows that his true Self is not the body, though It dwells in the body. Thus realizing the indestructible, all-pervading nature of his real Self, he surmounts all fear of death or loss, and is not moved even by the greatest sorrow. ”

“ When the consciousness is firmly fixed in God, the conception of diversity naturally drops away; because the One Cosmic Existence shines through all things. As we gain the light of wisdom, we cease to cling to the unrealities of this world and we find all our joy in the realm of Reality. ”

“ Every Upanishad begins with a Peace Chant (Shanti-patha) to create the proper atmosphere of purity and serenity. To study about God the whole nature must be prepared, so unitedly and with loving hearts teacher and disciples prayed to the Supreme Being for His grace and protection. It is not possible to comprehend the subtle problems of life unless the thought is tranquil and the energy concentrated. Until our mind is withdrawn from the varied distractions and agitations of worldly affairs, we cannot enter into the spirit of higher religious study. ”

“ I offered thee vast wealth, long life and every form of pleasure which tempts and deludes men; but thou hast proved thy worthiness by rejecting them all."
V Fools dwelling in ignorance, yet imagining themselves wise and learned, go round and round in crooked ways, like the blind led by the blind.
VI The Hereafter never rises before the thoughtless child (the ignorant) , deluded by the glamour of wealth. "This world alone is, there is none other": thinking thus, he falls under my sway again and again. ”

“ This text proclaims the glory and majesty of the Supreme. The Brahmanas stand for spiritual strength, the Kshatriyas for physical strength, yet both are overpowered by His mightiness. Life and death alike are food for Him. As the light of the great sun swallows up all the lesser lights of the universe, similarly all worlds are lost in the effulgence of the Eternal Omnipresent Being. ”

“ Ordinarily we know three states of consciousness only,—waking, dreaming and sleeping. There is, however, a fourth state, the superconscious, which transcends these. In the first three states the mind is not clear enough to save us from error; but in the fourth state it gains such purity of vision that it can perceive the Divine. If God could be known by the limited mind and senses, then God-knowledge would be like any other knowledge and spiritual science like any physical science. He can be known, however, by the purified mind only. Therefore to know God, man must purify himself. ”

“ These physical eyes are unable to perceive that subtle essence. Nor can it be expressed by finite language or known by finite intelligence, because it is infinite. Our conception of knowing finite things is to know their name and form; but knowledge of God must be distinct from such knowledge. This is why some declare God to be unknown and unknowable; because He is far more than eye or mind or speech can perceive, comprehend or express. The Upanishad does not say that He cannot be known. He is unknowable to man's finite nature. How can a finite mortal apprehend the Infinite Whole? ”

“ XXIV He who has not turned away from evil conduct, whose senses are uncontrolled, who is not tranquil, whose mind is not at rest, he can never attain this Atman even by knowledge.
Yama having first described what the Atman is, now tells us how to attain It. A man must try to subdue his lower nature and gain control over the body and senses. He must conquer the impure selfish desires which now disturb the serenity of his mind, that it may grow calm and peaceful. In other words, he must live the life and develop all spiritual qualities in order to perceive the Atman. ”

“ Those who hold themselves under the sway of ignorance, who serve the flesh and neglect the Atman or the real Self, are not able to perceive the effulgent and indestructible nature of their Soul; hence they fall into the realm where the Soul light does not shine. ”

“ Such an one also acquires unlimited strength, because he identifies himself with the ultimate Source. The strength which comes from one's own muscle and brain or from one's individual power must be limited and mortal and therefore cannot lift one beyond death; but through the strength which Atma-gnana or Self-knowledge gives, immortality is reached. Whenever knowledge is based on direct perception of this undying essence, one transcends all fear of death and becomes immortal. ”

“ Knowledge means union between subject and object. To gain this union one must practice, theory cannot help us. The previous chapter has shown that the knowledge of Brahman is beyond sense-perception: "There the eye does not go, nor speech, nor mind." "That is distinct from known and also It is beyond the unknown." Therefore it was necessary for the teacher to remind the disciple that knowledge based on sense-perception or intellectual apprehension should not be confounded with supersensuous knowledge. ”

“ A finite object, like a table or a tree, can be defined; but God, who is infinite and unbounded, cannot be expressed by finite language. Therefore the Rishis or Divine Seers, desirous not to limit the Unlimited, chose the indefinite term "That" to designate the Absolute.
In the light of true wisdom the phenomenal and the Absolute are inseparable. All existence is in the Absolute; and whatever exists, must exist in It; hence all manifestation is merely a modification of the One Supreme Whole, and neither increases nor diminishes It. ”

“ XXVIII What man dwelling on the decaying mortal plane, having approached the undecaying immortal one, and having reflected upon the nature of enjoyment through beauty and sense pleasure, would delight in long life?
XXIX O Death, that regarding which there is doubt, of the great Hereafter, tell us. Nachiketas asks for no other boon than that which penetrates this hidden secret.
Part Second I Yama said: The good is one thing and the pleasant another. These two, having different ends, bind a man. It is well with him who chooses the good. He who chooses the pleasant misses the true end. ”

“ The observation of material science being confined to the sense plane, it ignores what is beyond. Therefore it must always be limited and subject to change. It discovered atoms, then it went further and discovered electrons, and when it had found the one, it had to drop the other; so this kind of knowledge can never lead to the ultimate knowledge of the Infinite, because it is exclusive and not inclusive. Spiritual science is not merely a question of mind and brain, it depends on the awakening of our latent higher consciousness. ”

“ The wise men declare that he who worships in a one-sided way, whether the visible or the invisible, does not reach the highest goal. Only he who has a co-ordinated understanding of both the visible and the invisible, of matter and spirit, of activity and that which is behind activity, conquers Nature and thus overcomes death. By work, by making the mind steady and by following the prescribed rules given in the Scriptures, a man gains wisdom. ”

“ By this text the teacher confirms the idea that Brahman is unthinkable, because unconditioned. Therefore he says: He who considers It beyond thought, beyond sense-perception, beyond mind and speech, he alone has a true understanding of Brahman. They who judge a living being from his external form and sense faculties, know him not; because the real Self of man is not manifested in his seeing, hearing, speaking. His real Self is that within by which he hears and speaks and sees. ”

“ In these verses the teacher tries to make plain that all knowledge, as well as all sense perception, in every state of consciousness—sleeping, dreaming or waking—is possible only because the Self exists. ”

“ In the same way he knows not Brahman who thinks he knows It by name and form. The arrogant and foolish man thinks he knows everything; but the true knower is humble. He says: "How can I know Thee, who art Infinite and beyond mind and speech?" In the last portion of the text, the teacher draws an impressive contrast between the attitude of the wise man who knows, but thinks he does not know; and that of the ignorant who does not know, but thinks he knows.
IV It (Brahman) is known, when It is known in every state of consciousness. (Through such knowledge) one attains immortality. ”

“ A driver must possess first a thorough knowledge of the road; next he must understand how to handle the reins and control his horses. Then will he drive safely to his destination. Similarly in this journey of life, our mind and senses must be wholly under the control of our higher discriminative faculty; for only when all our forces work in unison can we hope to reach the goal—the abode of Absolute Truth.
X Beyond the senses are the objects, beyond the objects is the mind, beyond the mind is the intellect, beyond the intellect is the great Atman. ”

“ The Self or Atman holds the position of ruler in this city; and being above the modifications of birth, death and all human imperfections, It is not affected by the changes of the physical organism. As the intelligent man through constant thought and meditation realizes the splendour of this Supreme Spirit, he becomes free from that part of his nature which grieves and suffers, and thus he attains liberation. ”