Cicero: “You should use what you have, and whatever you may chance to be doing, do it with all your might.”

For nature puts a limit to living as to everything else.

But had it not been the case that souls were immortal, it would not have been the souls of all the best men that made the greatest efforts after an immortality of fame.

But my soul, I know not how, refusing to be kept down, ever fixed its eyes upon future ages, as though from a conviction that it would begin to live only when it had left the body.

I don't wish to depreciate life, as many men and good philosophers have often done; nor do I regret having lived, for I have done so in a way that lets me think that I was not born in vain.