Better know nothing than half-know many things.

My alma mater was books, a good library.... I could spend the rest of my life reading, just satisfying my curiosity.

I have just three things to teach: simplicity, patience, compassion. These three are your greatest treasures.

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

Don't worry that children never listen to you; worry that they are always watching you.

What sculpture is to a block of marble, education is to a human soul.

Education is the ability to listen to almost anything without losing your temper or your self-confidence.

Learning never exhausts the mind.

Integrity without knowledge is weak and useless, and knowledge without integrity is dangerous and dreadful.

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

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

Show me a family of readers, and I will show you the people who move the world.

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

All knowledge that the world has ever received comes from the mind; the infinite library of the universe is in our own mind.

For a successful technology, reality must take precedence over public relations, for Nature cannot be fooled.

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

What we know is a drop, what we don't know is an ocean.

The only true wisdom is in knowing you know nothing.

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

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

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