Civilization is a race between disaster and education.
There is no authority who decides what is a good idea.
Imagination is more important than knowledge.
A cynic is a man who knows the price of everything, and the value of nothing.
If the facts don't fit the theory, change the facts.
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.
Knowing others is wisdom, knowing yourself is Enlightenment.
Study hard what interests you the most in the most undisciplined, irreverent and original manner possible.
Necessity is the mother of invention.
The most important part of teaching is to teach what it is to know.
Dare to think for yourself.
It is beyond a doubt that all our knowledge begins with experience.
The books that the world calls immoral are books that show the world its own shame.
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.
I do not know how to teach philosophy without becoming a disturber of the peace.
The progressive development of man is vitally dependent on invention.
If there were no bad people, there would be no good lawyers.
The highest result of education is tolerance.
No man's knowledge here can go beyond his experience.
It is not enough for the teacher to love the child. She must first love and understand the universe. She must prepare herself, and truly work at it.
Investigate, educate and organize.