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

Reading furnishes the mind only with materials of knowledge; it is thinking that makes what we read ours.

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

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

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.

Knowing is not enough; we must apply. Willing is not enough; we must do.

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

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

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.

Free the child's potential, and you will transform him into the world.

When I am attacked by gloomy thoughts, nothing helps me so much as running to my books. They quickly absorb me and banish the clouds from my mind.

Dare to think for yourself.

Courage, conviction and confidence.

It is possible to fly without motors, but not without knowledge and skill.

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

Necessity is the mother of invention.

Evil being the root of mystery, pain is the root of knowledge.

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

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.

The most savage controversies are those about matters as to which there is no good evidence either way.

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