What we know is a drop, what we don't know is an ocean.
I have just three things to teach: simplicity, patience, compassion. These three are your greatest treasures.
The first idea the child must acquire is that of the difference between good and evil.
All knowledge that the world has ever received comes from the mind; the infinite library of the universe is in our own mind.
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 man who is fond of books is usually a man of lofty thought, and elevated opinions.
For a successful technology, reality must take precedence over public relations, for Nature cannot be fooled.
Just because I don't care doesn't mean I don't understand.
You can never be overdressed or overeducated.
With educated people, I suppose, punctuation is a matter of rule; with me it is a matter of feeling. But I must say I have great respect for the semi-colon; it's a useful little chap.
We could never learn to be brave and patient, if there were only joy in the world
Study without desire spoils the memory, and it retains nothing that it takes in.
Books are as useful to a stupid person as a mirror is useful to a blind person.
The most savage controversies are those about matters as to which there is no good evidence either way.
Know what you are talking about.
Education is the kindling of a flame, not the filling of a vessel.
Science is not only a disciple of reason but, also, one of romance and passion.
I prefer the company of peasants because they have not been educated sufficiently to reason incorrectly.
What is now proved was once only imagined.
Any knowledge that doesn't lead to new questions quickly dies out: it fails to maintain the temperature required for sustaining life.
If one cannot enjoy reading a book over and over again, there is no use in reading it at all.