Just when I thought there wasn't room enough for another thought in my head, I had this great idea.

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

The first principle is that you must not fool yourself and you are the easiest person to fool.

I am a part of everything that I have read.

It is beyond a doubt that all our knowledge begins with experience.

To educate a person in the mind but not in morals is to educate a menace to society.

I learned very early the difference between knowing the name of something and knowing something.

Knowledge, Action, Devotion are complementary to each other.

A man who has never gone to school may steal a freight car; but if he has a university education, he may steal the whole railroad.

In mathematics you don't understand things. You just get used to them.

Any knowledge that doesn't lead to new questions quickly dies out: it fails to maintain the temperature required for sustaining life.

With educated people, I suppose, punctuation is a matter of rule; with me it is a matter of feeling. But I must say I have great respect for the semi-colon; it's a useful little chap.

No man's knowledge here can go beyond his experience.

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.

I have no special talents. I am only passionately curious.

Know what you are talking about.

If I could explain it to the average person, I wouldn't have been worth the Nobel Prize.

I don't look on poetry as closed works. I feel they're going on all the time in my head and I occasionally snip off a length.

Reading without reflecting is like eating without digesting.

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.

It isn't what we don't know that gives us trouble, it's what we know that ain't so.