The only good is knowledge and the only evil is ignorance.

It is better to know how to learn than to know.

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

Books are for people who wish they were somewhere else.

I am a part of everything that I have read.

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

What is now proved was once only imagined.

Patience is a virtue, and I'm learning patience. It's a tough lesson.

If one cannot enjoy reading a book over and over again, there is no use in reading it at all.

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

The books that the world calls immoral are books that show the world its own shame.

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

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

When you know better you do better.

All stable processes we shall predict. All unstable processes we shall control.

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

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

Words can be like X-rays if you use them properly - they'll go through anything. You read and you?re pierced.

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

I prefer the company of peasants because they have not been educated sufficiently to reason incorrectly.

Civilization is a race between disaster and education.