A thought is an idea in transit.
The reading of all good books is like conversation with the finest men of past centuries.
All stable processes we shall predict. All unstable processes we shall control.
If there were no bad people, there would be no good lawyers.
Better know nothing than half-know many things.
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.
All sciences are vain and full of errors that are not born of Experience, the mother of all Knowledge.
To every action there is always an equal and opposite or contrary, reaction
Study hard what interests you the most in the most undisciplined, irreverent and original manner possible.
No man's knowledge here can go beyond his experience.
When I am attacked by gloomy thoughts, nothing helps me so much as running to my books. They quickly absorb me and banish the clouds from my 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.
Any knowledge that doesn't lead to new questions quickly dies out: it fails to maintain the temperature required for sustaining life.
If you can't explain it simply, you don't understand it well enough.
To read is to fly: it is to soar to a point of vantage which gives a view over wide terrains of history, human variety, ideas, shared experience and the fruits of many inquiries.
Those who fail to learn the lessons of history are doomed to repeat them.
No power and no treasure can outweigh the extension of our knowledge.
The highest activity a human being can attain is learning for understanding, because to understand is to be free.
The delight of opening a new pursuit, or a new course of reading, imparts the vivacity and novelty of youth even to old age.
I have just three things to teach: simplicity, patience, compassion. These three are your greatest treasures.
They say a little knowledge is a dangerous thing, but it's not one half so bad as a lot of ignorance.
