Classic reflections on aging, time, and wisdom

As I give thought to the matter, I find four causes for the apparent misery of old age;
Cicero, De Senectute (Of Old A…¹²

Let no one be slow to seek wisdom when he is young nor weary in search thereof when he is grown old.
Diogenes Laertius, Lives of th…³⁴

All the world's a stage, and all the men and women merely players.
William Shakespeare, As You Li…⁵⁶

Though I look old, yet I am strong and lusty.
William Shakespeare, As You Li…⁷⁸

It is not that we have a short space of time, but that we waste much of it. Life is long enough.
Seneca, De Brevitate Vitae (On…⁹¹⁰