What is freedom of expression? Without the freedom to offend, it ceases to exist.
Science is not only a disciple of reason but, also, one of romance and passion.
What we know is a drop, what we don't know is an ocean.
A child miseducated is a child lost.
There is no authority who decides what is a good idea.
I do not know how to teach philosophy without becoming a disturber of the peace.
I had rather excel others in the knowledge of what is excellent, than in the extent of my power and dominion
Study without desire spoils the memory, and it retains nothing that it takes in.
If you're teaching today what you were teaching five years ago, either the field is dead or you are.
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.
If one cannot enjoy reading a book over and over again, there is no use in reading it at all.
One test of the correctness of educational procedure is the happiness of the child.
Courage, conviction and confidence.
A child educated only at school is an uneducated child.
A thought is an idea in transit.
Words can be like X-rays if you use them properly - they'll go through anything. You read and you?re pierced.
Although modesty is natural to man, it is not natural to children. Modesty only begins with the knowledge of evil.
Most people have never learned that one of the main aims in life is to enjoy it.
I have no special talents. I am only passionately curious.
It took us three years to build the NeXT computer. If we'd given customers what they said they wanted, we'd have built a computer they'd have been happy with a year after we spoke to them - not something they'd want now.