Reading without reflecting is like eating without digesting.

Dare to think for yourself.

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

Just because I don't care doesn't mean I don't understand.

I decided to teach because I think that any person who studies philosophy has to be involved actively.

The fullness of knowledge only comes through the awareness of ignorance.

Don't worry that children never listen to you; worry that they are always watching you.

If I have seen further it is by standing on the shoulders of Giants.

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.

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.

Education is the kindling of a flame, not the filling of a vessel.

It is what you read when you don't have to that determines what you will be when you can't help it.

Education is our passport to the future, for tomorrow belongs to the people who prepare for it today.

You can never learn less, you can only learn more.

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

The highest activity a human being can attain is learning for understanding, because to understand is to be free.

Liberty without Learning is always in peril and Learning without Liberty is always in vain.

A little knowledge is a dangerous thing. So is a lot.

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 knowledge that the world has ever received comes from the mind; the infinite library of the universe is in our own mind.

You can never be overdressed or overeducated.