Yes, books are dangerous. ...

Yes, books are dangerous. They should be dangerous - they contain ideas.
Yes, books are dangerous. They should be dangerous - they contain ideas.
 Pete Hautman

More phrases

All the great things are simple, and many can be expressed in a single word: freedom, justice, honor, duty, mercy, hope.
I know but one freedom and that is the freedom of the mind.
 Antoine de Saint-Exupéry
Freedom is not worth having if it does not connote freedom to err.
The amount of happiness that you have depends on the amount of freedom you have in your heart.
 Thích Nhất Hạnh
Without freedom of thought, there can be no such thing as wisdom - and no such thing as public liberty without freedom of speech.

Quotes from the same author

You ever watch a football game and get totally into it? Why? It's not a real battle. It's just a game somebody made up. So how can you take it seriously? Or, you ever see a movie that made your heart about jump out of your chest? Or one that made you cry? Why? It wasn't real. You ever look at a photo of food that made your mouth water? Why? You can't eat the picture. . . . . . Same thing with water towers and God. I don't have to be a believer to be serious about my religion.
 Pete Hautman