Work while you have the light. You are responsible for the talent that has been entrusted to you.

Doing easily what others find difficult is talent; doing what is impossible for others is genius.

A philosopher is [one who] aspires to explain away all mysteries, to dissolve them into light.

Everything you need for better future and success has already been written. And guess what? All you have to do is go to the library.

Learn to... be what you are, and learn to resign with a good grace all that you are not.

I'm not interested in age. People who tell me their age are silly. You're as old as you feel.