Everything we hear is an opinion, not a fact. Everything we see is a perspective, not the truth.
Great dreams of great dreamers are always transcended.
Creativity is the process of having original ideas that have value.
Just remember, once you're over the hill you begin to pick up speed.
In a good bookroom you feel in some mysterious way that you are absorbing the wisdom contained in all the books through your skin, without even opening them.
I believe that one defines oneself by reinvention. To not be like your parents. To not be like your friends. To be yourself. To cut yourself out of stone.
Medicine heals diseases of the body, wisdom frees the soul from passions.
Learn as though you would never be able to master it; hold it as though you would be in fear of losing it.
When you judge another, you do not define them, you define yourself.
Promises are like crying babies in a theater, they should be carried out at once.
If we don't believe in freedom of expression for people we despise, we don't believe in it at all.
Circumstances do not make a man, they reveal him.
Rational discussion is useful only when there is a significant base of shared assumptions.
Do your little bit of good where you are; it's those little bits of good put together that overwhelm the world.
Colorless green ideas sleep furiously
In the practice of tolerance, one's enemy is the best teacher.
We are all born ignorant, but one must work hard to remain stupid
Man is the only creature who refuses to be what he is.
A crust eaten in peace is better than a banquet partaken in anxiety.
Knowledge speaks, but wisdom listens
Each problem that I solved became a rule which served afterwards to solve other problems.