A child miseducated is a child lost.

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

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

If you can't explain it simply, you don't understand it well enough.

Opinion is the medium between knowledge and ignorance.

The most important part of teaching is to teach what it is to know.

Real knowledge is to know the extent of one's ignorance.

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

Better know nothing than half-know many things.

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

Knowing others is wisdom, knowing yourself is Enlightenment.

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

Education is a system of imposed ignorance.

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.

Learning never exhausts the mind.

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

Investigate, educate and organize.

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

I decided to teach because I think that any person who studies philosophy has to be involved actively.

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.

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