The delight of opening a new pursuit, or a new course of reading, imparts the vivacity and novelty of youth even to old age.
Although modesty is natural to man, it is not natural to children. Modesty only begins with the knowledge of evil.
A witty saying proves nothing.
You can never learn less, you can only learn more.
Real knowledge is to know the extent of one's ignorance.
Liberty without Learning is always in peril and Learning without Liberty is always in vain.
What is now proved was once only imagined.
Learning never exhausts the mind.
The great difficulty in education is to get experience out of ideas.
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.
There is one quality which one must possess to win, and that is definiteness of purpose, the knowledge of what one wants, and a burning desire to possess it.
My alma mater was books, a good library.... I could spend the rest of my life reading, just satisfying my curiosity.
Those who fail to learn the lessons of history are doomed to repeat them.
A little knowledge that acts is worth infinitely more than much knowledge that is idle.
Any knowledge that doesn't lead to new questions quickly dies out: it fails to maintain the temperature required for sustaining life.
Opinion is the medium between knowledge and ignorance.
If you can't explain it simply, you don't understand it well enough.
What we know is a drop, what we don't know is an ocean.
Knowing is not enough; we must apply. Willing is not enough; we must do.
It is possible to fly without motors, but not without knowledge and skill.
I am indebted to my father for living, but to my teacher for living well.