Knowing is not enough; we must apply. Willing is not enough; we must do.
If you want the present to be different from the past, study the past.
Don't learn to do, but learn in doing.
The progressive development of man is vitally dependent on invention.
No power and no treasure can outweigh the extension of our knowledge.
The highest activity a human being can attain is learning for understanding, because to understand is to be free.
A cynic is a man who knows the price of everything, and the value of nothing.
When you know better you do better.
Books are for people who wish they were somewhere else.
I do not know how to teach philosophy without becoming a disturber of the peace.
The real solution lies in a world in which charity will have become unnecessary.
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.
The whole of science is nothing more than a refinement of everyday thinking.
Learning never exhausts the mind.
Books! I dunno if I ever told you this, but books are the greatest gift one person can give another.
The fullness of knowledge only comes through the awareness of ignorance.
Most people have never learned that one of the main aims in life is to enjoy it.
Evil being the root of mystery, pain is the root of knowledge.
The highest result of education is tolerance.
I decided to teach because I think that any person who studies philosophy has to be involved actively.
I think that kids have a greater capacity for processing things than we give them credit for.