Know what you are talking about.
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.
God created man in His own image, says the Bible; philosophers reverse the process: they create God in theirs.
What we know is a drop, what we don't know is an ocean.
The books that the world calls immoral are books that show the world its own shame.
Educate the children and it won't be necessary to punish the men.
If you want the present to be different from the past, study the past.
Opinion is the medium between knowledge and ignorance.
Just when I thought there wasn't room enough for another thought in my head, I had this great idea.
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.
The progressive development of man is vitally dependent on invention.
Education is an ornament for the prosperous, a refuge for the unfortunate.
The schools ain't what they used to be and never was.
Necessity is the mother of invention.
Knowledge, Action, Devotion are complementary to each other.
Imagination is the source of every form of human achievement. And it's the one thing that I believe we are systematically jeopardizing in the way we educate our children and ourselves.
Any knowledge that doesn't lead to new questions quickly dies out: it fails to maintain the temperature required for sustaining life.
The man who does not read good books has no advantage over the man who can't read them.
In order to stave off covetouness, greed, and spite, citizens world over must be educated.
Education is the ability to listen to almost anything without losing your temper or your self-confidence.
Patience is a virtue, and I'm learning patience. It's a tough lesson.