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.
What sculpture is to a block of marble, education is to a human soul.
If I could explain it to the average person, I wouldn't have been worth the Nobel Prize.
Human behavior flows from three main sources: desire, emotion, and knowledge
That men do not learn very much from the lessons of history is the most important of all the lessons that history has to teach.
Science is a way of thinking much more than it is a body of knowledge.
Most people have never learned that one of the main aims in life is to enjoy it.
You can never be overdressed or overeducated.
Those who fail to learn the lessons of history are doomed to repeat them.
Books are for people who wish they were somewhere else.
I decided to teach because I think that any person who studies philosophy has to be involved actively.
If you can't explain it simply, you don't understand it well enough.
Dare to think for yourself.
Science is a rising force, It is creating a new world about us. It needs to be watched and pressed into service, and in any case, it would be courting disaster to ignore it.
To read is to fly: it is to soar to a point of vantage which gives a view over wide terrains of history, human variety, ideas, shared experience and the fruits of many inquiries.
Don't worry that children never listen to you; worry that they are always watching you.
It isn't what we don't know that gives us trouble, it's what we know that ain't so.
If the facts don't fit the theory, change the facts.
Intelligence plus character-that is the goal of true education.
Knowing others is wisdom, knowing yourself is Enlightenment.
Although modesty is natural to man, it is not natural to children. Modesty only begins with the knowledge of evil.