Lucius Annaeus Seneca (often known simply as Seneca, or Seneca the Younger) (ca. 4 BC-AD 65) was a Roman Stoic philosopher, statesman, dramatist, and in one work humorist, of the Silver Age of Latin literature.
We all sorely complain of the shortness of time, and yet have much more than we know what to do with. Our lives are either spent in doing nothing at all, or in doing nothing to the purpose, or in doing nothing that we ought to do. We are always complaining that our days are few, and acting as though there would be no end of them.
As for old age, embrace and love it. It abounds with pleasure if you know how to use it. The gradually declining years are among the sweetest in a man's life, and I maintain that, even when they have reached the extreme limit, they have their pleasure still.