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

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

Intelligence plus character-that is the goal of true education.

An investment in knowledge pays the best interest.

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

There is one quality which one must possess to win, and that is definiteness of purpose, the knowledge of what one wants, and a burning desire to possess it.

I cannot teach anybody anything. I can only make them think

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

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

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

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

Just when I thought there wasn't room enough for another thought in my head, I had this great idea.

Necessity is the mother of invention.

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

Education is an admirable thing, but it is well to remember from time to time that nothing that is worth knowing can be taught.

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

Physics is like sex: sure, it may give some practical results, but that's not why we do it.

Investigate, educate and organize.

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

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.

Learn as though you would never be able to master it; hold it as though you would be in fear of losing it.