If you're teaching today what you were teaching five years ago, either the field is dead or you are.

The man who is fond of books is usually a man of lofty thought, and elevated opinions.

The fullness of knowledge only comes through the awareness of ignorance.

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

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

Suddenly degrees aren't worth anything. Isn't that true? When I was a student, if you had a degree, you had a job. If you didn't have a job it's because you didn't want one. And I didn't want one, frankly.

All sciences are vain and full of errors that are not born of Experience, the mother of all Knowledge.

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.

I am so clever that sometimes I don't understand a single word of what I am saying.

What is freedom of expression? Without the freedom to offend, it ceases to exist.

I cannot live without books.

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

Real learning comes about when the competitive spirit has ceased.

Knowledge, Action, Devotion are complementary to each other.

Education is the best friend. An educated person is respected everywhere. Education beats the beauty and the youth.

I am indebted to my father for living, but to my teacher for living well.

A thought is an idea in transit.

I do not know how to teach philosophy without becoming a disturber of the peace.

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

Any man who reads too much and uses his own brain too little falls into lazy habits of thinking.

I am a part of everything that I have read.