Seneca the Younger on Time

"“New friends, however, will not be the same.” No, nor will you yourself remain the same; you change with every day and every hour."

"Whatever can happen at any time can happen today."

"Two elements must therefore be rooted out once for all—the fear of future suffering, and the recollection of past suffering; since the latter no longer concerns me, and the former concerns me not yet."

"Would you not think him an utter fool who wept because he was not alive a thousand years ago? And is he not just as much of a fool who weeps because he will not be alive a thousand years from now? It is all the same; you will not be, and you were not. Neither of these periods of time belongs to you."

"You see that man can endure toil: Cato, on foot, led an army through African deserts. You see that thirst can be endured: he marched over sun-baked hills, dragging the remains of a beaten army and with no train of supplies, undergoing lack of water and wearing a heavy suit of armour; always the last to drink of the few springs which they chanced to find. You see that honour, and dishonour too, can be despised: for they report that on the very day when Cato was defeated at the elections, he played a game of ball. You see also that man can be free from fear of those above him in rank: for Cato attacked Caesar and Pompey simultaneously, at a time when none dared fall foul of the one without endeavouring to oblige the other. You see that death can be scorned as well as exile: Cato inflicted exile upon himself and finally death, and war all the while."