Seneca,
Moral letters to Lucilius — Letter 12…
“ Moreover, no one is so old that it would be improper for him to hope for another day of existence. And one day, mind you, is a stage on life's journey.Our span of life is divided into parts; it consists of large circles enclosing smaller. One circle embraces and bounds the rest; it reaches from birth to the last day of existence. The next circle limits the period of our young manhood. ”
