Real knowledge is to know the extent of one's ignorance.
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 most savage controversies are those about matters as to which there is no good evidence either way.
Necessity is the mother of invention.
Education is the kindling of a flame, not the filling of a vessel.
The great difficulty in education is to get experience out of ideas.
The man who is fond of books is usually a man of lofty thought, and elevated opinions.
A spirit of national masochism prevails, encouraged by an effete corps of impudent snobs who characterize themselves as intellectuals.
Science is what we have learned about how to keep from fooling ourselves.
Patience is a virtue, and I'm learning patience. It's a tough lesson.
The deepest sin against the human mind is to believe things without evidence.
A thought is an idea in transit.
Never help a child with a task at which he feels he can succeed.
Knowing is not enough; we must apply. Willing is not enough; we must do.
Knowledge, Action, Devotion are complementary to each other.
Civilization is a race between disaster and education.
The man who does not read good books has no advantage over the man who can't read them.
If you're not learning while you're earning, you're cheating yourself out of the better portion of your compensation.
The highest result of education is tolerance.
Investigate, educate and organize.
Integrity without knowledge is weak and useless, and knowledge without integrity is dangerous and dreadful.