Seneca

“ Examine yourself; scrutinize and observe yourself in divers ways; but mark, before all else, whether it is in philosophy or merely in life itself [1] that you have made progress. 3. Philosophy is no trick to catch the public; it is not devised for show. It is a matter, not of words, but of facts. It is not pursued in order that the day may yield some amusement before it is spent, or that our leisure may be relieved of a tedium that irks us. It moulds and constructs the soul; it orders our life, guides our conduct, shows us what we should do and what we should leave undone ”

“ Natural desires are limited; but those which spring from false opinion can have no stopping-point. The false has no limits. When you are travelling on a road, there must be an end; but when astray, your wanderings are limitless. Recall your steps, therefore, from idle things, and when you would know whether that which you seek is based upon a natural or upon a misleading desire, consider whether it can stop at any definite point. If you find, after having travelled far, that there is a more distant goal always in view, you may be sure that this condition is contrary to nature. ”

“ XVI. On Philosophy, the Guide of Life 1. It is clear to you, I am sure, Lucilius, that no man can live a happy life, or even a supportable life, without the study of wisdom; you know also that a happy life is reached when our wisdom is brought to completion, but that life is at least endurable even when our wisdom is only begun. ”

“ But why did I say "other men"? Whatever is well said by anyone is mine. – This also is a saying of Epicurus: [2] "If you live according to nature, you will never be poor; if you live according to opinion, you will never be rich." ”

“ She will encourage us to obey God cheerfully, but Fortune defiantly; she will teach us to follow God and endure Chance. 6. But it is not my purpose now to be led into a discussion as to what is within our own control, – if foreknowledge is supreme, or if a chain of fated events drags us along in its clutches, or if the sudden and the unexpected play the tyrant over us ”

“ This idea, however, clear though it is, must be strengthened and implanted more deeply by daily reflection; it is more important for you to keep the resolutions you have already made than to go on and make noble ones. You must persevere, must develop new strength by continuous study, until that which is only a good inclination becomes a good settled purpose. ”