Any knowledge that doesn't lead to new questions quickly dies out: it fails to maintain the temperature required for sustaining life.
Industrialize or perish.
The most important part of teaching is to teach what it is to know.
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.
A cynic is a man who knows the price of everything, and the value of nothing.
Books are for people who wish they were somewhere else.
Any man who reads too much and uses his own brain too little falls into lazy habits of thinking.
There is nothing more notable in Socrates than that he found time, when he was an old man, to learn music and dancing, and thought it time well spent.
Education is our passport to the future, for tomorrow belongs to the people who prepare for it today.
The progressive development of man is vitally dependent on invention.
Better know nothing than half-know many things.
Education is the kindling of a flame, not the filling of a vessel.
Show me a family of readers, and I will show you the people who move the world.
Most people have never learned that one of the main aims in life is to enjoy it.
A little knowledge that acts is worth infinitely more than much knowledge that is idle.
A witty saying proves nothing.
Knowledge is of two kinds. We know a subject ourselves, or we know where we can find information upon it.
It is possible to fly without motors, but not without knowledge and skill.
The fullness of knowledge only comes through the awareness of ignorance.
A child educated only at school is an uneducated child.
The whole of science is nothing more than a refinement of everyday thinking.