Knowledge becomes evil if the aim be not virtuous.

Medicine is my lawful wife and literature my mistress; when I get tired of one, I spend the night with the other.

What is now proved was once only imagined.

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

There is nothing more awful, insulting, and depressing than banality.

Necessity is the mother of invention.

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.

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

As we acquire more knowledge, things do not become more comprehensible but more mysterious.

It is what you read when you don't have to that determines what you will be when you can't help it.

To read is to fly: it is to soar to a point of vantage which gives a view over wide terrains of history, human variety, ideas, shared experience and the fruits of many inquiries.

The knowledge of all things is possible

When you know better you do better.

The only true wisdom is in knowing you know nothing.

I like poems you can tack all over with a hammer and there are no hollow places.

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

If I have seen further it is by standing on the shoulders of Giants.

The only good is knowledge and the only evil is ignorance.

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

The delight of opening a new pursuit, or a new course of reading, imparts the vivacity and novelty of youth even to old age.

Knowing others is wisdom, knowing yourself is Enlightenment.