Books are for people who wish they were somewhere else.
If you can't explain it simply, you don't understand it well enough.
Courage, conviction and confidence.
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.
The more I read, the more I acquire, the more certain I am that I know nothing.
If you're teaching today what you were teaching five years ago, either the field is dead or you are.
Knowing others is wisdom, knowing yourself is Enlightenment.
The most important part of teaching is to teach what it is to know.
Education is the most powerful weapon which you can use to change the world.
Never help a child with a task at which he feels he can succeed.
If you want the present to be different from the past, study the past.
A little knowledge that acts is worth infinitely more than much knowledge that is idle.
I cannot live without books.
The highest result of education is tolerance.
Just when I thought there wasn't room enough for another thought in my head, I had this great idea.
Evil being the root of mystery, pain is the root of knowledge.
Liberty without Learning is always in peril and Learning without Liberty is always in vain.
When you know better you do better.
Dare to think for yourself.
The deepest sin against the human mind is to believe things without evidence.
Educate the children and it won't be necessary to punish the men.