Seneca

“ Can anything be sillier than the point of view of certain people—I mean those who boast of their foresight? They keep themselves very busily engaged in order that they may be able to live better; they spend life in making ready to live! They form their purposes with a view to the distant future; yet postponement is the greatest waste of life; it deprives them of each day as it comes, it snatches from them the present by promising something hereafter. The greatest hindrance to living is expectancy, which depends upon the morrow and wastes to-day. ”

“ And, too, the utterance of the bard is most admirably worded to cast censure upon infinite delay, in that he says, not "the fairest age," but "the fairest day." Why, to whatever length your greed inclines, do you stretch before yourself months and years in long array, unconcerned and slow though time flies so fast? The poet speaks to you about the day, and about this very day that is flying. Is there, then, any doubt that for hapless mortals, that is, for men who are engrossed, the fairest day is ever the first to flee? ”

“ Old age surprises them while their minds are still childish, and they come to it unprepared and unarmed, for they have made no provision for it; they have stumbled upon it suddenly and unexpectedly, they did not notice that it was drawing nearer day by day. Even as conversation or reading or deep meditation on some subject beguiles the traveller, and he finds that he has reached the end of his journey before he was aware that he was approaching it, just so with this unceasing and most swift journey of life, which we make at the same pace whether waking or sleeping ”