I cannot teach anybody anything. I can only make them think

The books that the world calls immoral are books that show the world its own shame.

They say a little knowledge is a dangerous thing, but it's not one half so bad as a lot of ignorance.

It is possible to fly without motors, but not without knowledge and skill.

Show me a family of readers, and I will show you the people who move the world.

Physics is like sex: sure, it may give some practical results, but that's not why we do it.

A witty saying proves nothing.

All sciences are vain and full of errors that are not born of Experience, the mother of all Knowledge.

Make it a rule never to give a child a book you would not read yourself.

Investigate, educate and organize.

Any sufficiently advanced technology is indistinguishable from magic.

No man's knowledge here can go beyond his experience.

Science is not only a disciple of reason but, also, one of romance and passion.

Those who fail to learn the lessons of history are doomed to repeat 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.

Human behavior flows from three main sources: desire, emotion, and knowledge

I don't look on poetry as closed works. I feel they're going on all the time in my head and I occasionally snip off a length.

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.

Reading without reflecting is like eating without digesting.

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.

Seek knowledge from the cradle to the grave.