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

Know what you are talking about.

When you know better you do better.

The real solution lies in a world in which charity will have become unnecessary.

The ability to observe without evaluating is the highest form of intelligence.

A little knowledge is a dangerous thing. So is a lot.

The first idea the child must acquire is that of the difference between good and evil.

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

A witty saying proves nothing.

My weapon is literature

If you want the present to be different from the past, study the past.

No power and no treasure can outweigh the extension of our knowledge.

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

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

Education is the kindling of a flame, not the filling of a vessel.

The most important part of teaching is to teach what it is to know.

There is no authority who decides what is a good idea.

Imagination is more important than knowledge.

Education is an admirable thing, but it is well to remember from time to time that nothing that is worth knowing can be taught.

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

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