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

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

The reading of all good books is like conversation with the finest men of past centuries.

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

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

Science is a way of thinking much more than it is a body of knowledge.

A child educated only at school is an uneducated child.

Just because I don't care doesn't mean I don't understand.

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

Although modesty is natural to man, it is not natural to children. Modesty only begins with the knowledge of evil.

Knowledge is power. Information is liberating. Education is the premise of progress, in every society, in every family.

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

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

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

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

God created man in His own image, says the Bible; philosophers reverse the process: they create God in theirs.

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

I cannot teach anybody anything. I can only make them think

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

Common sense is the collection of prejudices acquired by age eighteen.

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