In mathematics you don't understand things. You just get used to them.
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.
If you can't explain it simply, you don't understand it well enough.
The delight of opening a new pursuit, or a new course of reading, imparts the vivacity and novelty of youth even to old age.
Those who fail to learn the lessons of history are doomed to repeat them.
The idea is to try to give all the information to help others to judge the value of your contribution; not just the information that leads to judgment in one particular direction or another.
To educate a person in the mind but not in morals is to educate a menace to society.
Many much-learned men have no intelligence.
The only true wisdom is in knowing you know nothing.
Action not backed by knowledge and knowledge not translatable into action, both can not stand the test of time.
The direction in which education starts a man will determine his future in life
The most important part of teaching is to teach what it is to know.
When you know better you do better.
God created man in His own image, says the Bible; philosophers reverse the process: they create God in theirs.
You can never learn less, you can only learn more.
Any knowledge that doesn't lead to new questions quickly dies out: it fails to maintain the temperature required for sustaining life.
Knowing others is wisdom, knowing yourself is Enlightenment.
Language is courage: the ability to conceive a thought, to speak it, and by doing so to make it true.
Educate the children and it won't be necessary to punish the men.
Opinion is the medium between knowledge and ignorance.
The real solution lies in a world in which charity will have become unnecessary.