Any knowledge that doesn't lead to new questions quickly dies out: it fails to maintain the temperature required for sustaining life.

Necessity is the mother of invention.

Education is the most powerful weapon which you can use to change the world.

Knowledge is of two kinds. We know a subject ourselves, or we know where we can find information upon it.

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

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

Any sufficiently advanced technology is indistinguishable from magic.

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

Knowledge, Action, Devotion are complementary to each other.

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

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

He who would learn to fly one day must first learn to stand and walk and run and climb and dance; one cannot fly into flying.

If help and salvation are to come, they can only come from the children, for the children are the makers of men.

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

Science is not only a disciple of reason but, also, one of romance and passion.

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

Industrialize or perish.

The whole of science is nothing more than a refinement of everyday thinking.

Reading without reflecting is like eating without digesting.

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

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