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

Men are born ignorant, not stupid. They are made stupid by education.

They say a little knowledge is a dangerous thing, but it's not one half so bad as a lot of ignorance.

You can never be overdressed or overeducated.

Necessity is the mother of invention.

You can never learn less, you can only learn more.

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

What is freedom of expression? Without the freedom to offend, it ceases to exist.

The secret of life is not enjoyment but education through experience.

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

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

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

The great difficulty in education is to get experience out of ideas.

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

If you're not learning while you're earning, you're cheating yourself out of the better portion of your compensation.

For a successful technology, reality must take precedence over public relations, for Nature cannot be fooled.

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

Know what you are talking about.

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

When you know better you do better.

There is nothing more awful, insulting, and depressing than banality.