He who would learn to fly one day must first learn to stand and walk and run and climb and dance; one cannot fly into flying.

The real solution lies in a world in which charity will have become unnecessary.

Education is an ornament for the prosperous, a refuge for the unfortunate.

Evil being the root of mystery, pain is the root of knowledge.

Education is a human right with immense power to transform. On its foundation rest the cornerstones of freedom, democracy and sustainable human development.

Knowledge, Action, Devotion are complementary to each other.

If the facts don't fit the theory, change the facts.

Study hard what interests you the most in the most undisciplined, irreverent and original manner possible.

If one cannot enjoy reading a book over and over again, there is no use in reading it at all.

Real knowledge is to know the extent of one's ignorance.

Study without desire spoils the memory, and it retains nothing that it takes in.

One test of the correctness of educational procedure is the happiness of the child.

Those who fail to learn the lessons of history are doomed to repeat them.

Necessity is the mother of invention.

Dare to think for yourself.

The deepest sin against the human mind is to believe things without evidence.

Language is courage: the ability to conceive a thought, to speak it, and by doing so to make it true.

Most people have never learned that one of the main aims in life is to enjoy it.

The most savage controversies are those about matters as to which there is no good evidence either way.

I decided to teach because I think that any person who studies philosophy has to be involved actively.

Opinion is the medium between knowledge and ignorance.