Better know nothing than half-know many things.

Opinion is the medium between knowledge and ignorance.

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

Science is what we have learned about how to keep from fooling ourselves.

Knowing others is wisdom, knowing yourself is Enlightenment.

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

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.

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

It is not enough for the teacher to love the child. She must first love and understand the universe. She must prepare herself, and truly work at it.

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

Books! I dunno if I ever told you this, but books are the greatest gift one person can give another.

A child educated only at school is an uneducated child.

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

Books are for people who wish they were somewhere else.

If you're teaching today what you were teaching five years ago, either the field is dead or you are.

The schools ain't what they used to be and never was.

A cynic is a man who knows the price of everything, and the value of nothing.

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

Investigate, educate and organize the country must progress, productive works and industries are the main avenues at present next to education for the advancement of the country

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

Any sufficiently advanced technology is indistinguishable from magic.