Language is courage: the ability to conceive a thought, to speak it, and by doing so to make it true.
Any knowledge that doesn't lead to new questions quickly dies out: it fails to maintain the temperature required for sustaining life.
The first idea the child must acquire is that of the difference between good and evil.
I think that kids have a greater capacity for processing things than we give them credit for.
If I could explain it to the average person, I wouldn't have been worth the Nobel Prize.
The ability to observe without evaluating is the highest form of intelligence.
Education is the kindling of a flame, not the filling of a vessel.
Dare to think for yourself.
Knowledge becomes evil if the aim be not virtuous.
The only true wisdom is in knowing you know nothing.
Study hard what interests you the most in the most undisciplined, irreverent and original manner possible.
What is freedom of expression? Without the freedom to offend, it ceases to exist.
Education is the most powerful weapon which you can use to change the world.
A cynic is a man who knows the price of everything, and the value of nothing.
Men are born ignorant, not stupid. They are made stupid by education.
Just when I thought there wasn't room enough for another thought in my head, I had this great idea.
I do not know how to teach philosophy without becoming a disturber of the peace.
Technology is just a tool. In terms of getting the kids working together and motivating them, the teacher is the most important.
Imagination is more important than knowledge.
You can never learn less, you can only learn more.
If you want the present to be different from the past, study the past.