Cicero: “Active exercise, therefore, and temperance can preserve some part of one's former strength even in old age.”

Nay, if some god should grant me to renew my childhood from my present age and once more to be crying in my cradle, I would firmly refuse; nor should I in truth be willing, after having, as it were, run the full course, to be recalled from…

For nature has given us a place of entertainment, not of residence.

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.

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