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

It is beyond a doubt that all our knowledge begins with experience.

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

Books are as useful to a stupid person as a mirror is useful to a blind person.

Human behavior flows from three main sources: desire, emotion, and knowledge

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

Seek knowledge from the cradle to the grave.

Study without desire spoils the memory, and it retains nothing that it takes in.

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

A little knowledge that acts is worth infinitely more than much knowledge that is idle.

It isn't what we don't know that gives us trouble, it's what we know that ain't so.

Integrity without knowledge is weak and useless, and knowledge without integrity is dangerous and dreadful.

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

What sculpture is to a block of marble, education is to a human soul.

Knowing others is wisdom, knowing yourself is Enlightenment.

Learning never exhausts the mind.

Those who fail to learn the lessons of history are doomed to repeat them.

My alma mater was books, a good library.... I could spend the rest of my life reading, just satisfying my curiosity.

The first principle is that you must not fool yourself and you are the easiest person to fool.

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

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