All sciences are vain and full of errors that are not born of Experience, the mother of all Knowledge.
Knowing others is wisdom, knowing yourself is Enlightenment.
I have just three things to teach: simplicity, patience, compassion. These three are your greatest treasures.
Knowledge is of two kinds. We know a subject ourselves, or we know where we can find information upon it.
I am so clever that sometimes I don't understand a single word of what I am saying.
If you can't explain it simply, you don't understand it well enough.
My alma mater was books, a good library.... I could spend the rest of my life reading, just satisfying my curiosity.
The more I read, the more I acquire, the more certain I am that I know nothing.
The man who does not read good books has no advantage over the man who can't read them.
A cynic is a man who knows the price of everything, and the value of nothing.
Courage, conviction and confidence.
Books! I dunno if I ever told you this, but books are the greatest gift one person can give another.
Learn as though you would never be able to master it; hold it as though you would be in fear of losing it.
If you're teaching today what you were teaching five years ago, either the field is dead or you are.
Human behavior flows from three main sources: desire, emotion, and knowledge
I have no special talents. I am only passionately curious.
I am a part of everything that I have read.
An investment in knowledge pays the best interest.
There is nothing more notable in Socrates than that he found time, when he was an old man, to learn music and dancing, and thought it time well spent.
There is no authority who decides what is a good idea.
Those who fail to learn the lessons of history are doomed to repeat them.