The logic of all this seems to be that it is all right for young people in a democracy to learn about any civilization or social theory that is not dangerous, but that they should remain entirely ignorant of any civilization or social theory that might be dangerous on the ground that what you don't know can't hurt you ... a complete denial of the democratic principle that the general diffusion of knowledge and learning through the community is essential to the preservation of free government.

Corporations have at different times been so far unable to distinguish freedom of speech from freedom of lying that their freedom has to be curbed.

All historical writing, even the most honest, is unconsciously subjective, since every age is bound, in spite of itself, to make the dead perform whatever tricks it finds necessary for its own peace of mind.

History is an indispensable even though not the highest form of intellectual endeavor.

My own mind is my own church.

To ask whether the natural rights philosophy of the Declaration of Independence is true or false, is essentially a meaningless question.

The significance of man is that he is insignificant and is aware of it.