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

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

If you want the present to be different from the past, study the past.

Any man who reads too much and uses his own brain too little falls into lazy habits of thinking.

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

Books are for people who wish they were somewhere else.

In order to stave off covetouness, greed, and spite, citizens world over must be educated.

A thought is an idea in transit.

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

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

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

I am so clever that sometimes I don't understand a single word of what I am saying.

I am a part of everything that I have read.

I had rather excel others in the knowledge of what is excellent, than in the extent of my power and dominion

Imagination is the source of every form of human achievement. And it's the one thing that I believe we are systematically jeopardizing in the way we educate our children and ourselves.

Knowledge, Action, Devotion are complementary to each other.

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

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

Action not backed by knowledge and knowledge not translatable into action, both can not stand the test of time.

Necessity is the mother of invention.

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