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.
Necessity is the mother of invention.
The schools ain't what they used to be and never was.
Education is the ability to listen to almost anything without losing your temper or your self-confidence.
What is now proved was once only imagined.
Better know nothing than half-know many things.
Many much-learned men have no intelligence.
A witty saying proves nothing.
Study hard what interests you the most in the most undisciplined, irreverent and original manner possible.
As we acquire more knowledge, things do not become more comprehensible but more mysterious.
Reading is to the mind what exercise is to the body.
Courage, conviction and confidence.
The highest result of education is tolerance.
We could never learn to be brave and patient, if there were only joy in the world
Any man who reads too much and uses his own brain too little falls into lazy habits of thinking.
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.
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.
Learning never exhausts the mind.
The delight of opening a new pursuit, or a new course of reading, imparts the vivacity and novelty of youth even to old age.
Reading furnishes the mind only with materials of knowledge; it is thinking that makes what we read ours.
Physics is like sex: sure, it may give some practical results, but that's not why we do it.