It is humankind's duty to respect all life, not only animals have feelings but even also trees and plants

As plants are suffocated and drowned with too much moisture, and lamps with too much oil, so is the active part of the understanding with too much study

Antigonus, having taken one of his soldiers into a great degree of favor and esteem for his valor, gave his physicians strict charge to cure him of a long and inward disease under which he had a great while languished, and observing that, after his cure, he went much more coldly to work than before, he asked him what had so altered and cowed him: “Yourself, sir,” replied the other, “by having eased me of the pains that made me weary of my life.

The advantage of living is not measured by length, but by use; some men have lived long, and lived little; attend to it while you are in it. It lies in your will, not in the number of years, for you to have lived enough.

All the fame I look for in life is to have lived it quietly

We are all of us richer than we think we are