The only valid censorship of ideas is the right of people not to listen.

Unanimity is worse than censorship. Censorship obliges us to hold our own truth silent; unanimity forces us to repeat the truth of others, even thought we do not believe it… It dissolves our own personalities into a general, monotonous chorus.

Let us be clear: censorship is cowardice… It masks corruption. It is a school of torture: its teaches, and accustoms one to the use of force against an idea, to submit thought to an alien “other.” But worst still, censorship destroys criticism, which is the essential ingredient of culture.

By placing discretion in the hands of an official to grant or deny a license, such a statute creates a threat of censorship that by its very existence chills free speech.

Creationists sometimes claim that scientists have a vested interest in the concept of biological evolution and are unwilling to consider other possibilities. But this claim, too, misrepresents science. Scientists continually test their ideas against observations and submit their work to their colleagues for critical peer review of ideas, evidence, and conclusions before a scientific paper is published in any respected scientific journal. Unexplained observations are eagerly pursued because they can be signs of important new science or problems with an existing hypothesis or theory. History is replete with scientists challenging accepted theory by offering new evidence and more comprehensive explanations to account for natural phenomena. Also, science has a competitive element as well as a cooperative one. If one scientist clings to particular ideas despite evidence to the contrary, another scientist will attempt to replicate relevant experiments and will not hesitate to publish conflicting evidence. If there were serious problems in evolutionary science, many scientists would be eager to win fame by being the first to provide a better testable alternative. That there are no viable alternatives to evolution in the scientific literature is not because of vested interests or censorship but because evolution has been and continues to be solidly supported by evidence.

Only six months ago, I discovered that, over the years, some cubby-hole editors at Ballantine Books, fearful of contaminating the young, had, bit by bit, censored some 75 separate sections from the novel. Students, reading the novel which, after all, deals with the censorship and book-burning in the future, wrote to tell me of this exquisite irony. Judy-Lynn Del Rey, one of the new Ballantine editors, is having the entire book reset and republished this summer with all the damns and hells back in place.

Love is the only thing you can really give in all this world. When you give love, you give everything.

People should be very careful when choosing the future fathers and mothers of their children. For that reason alone, it is extremely mean to demand a marriage certificate for life, just for one night of embracement.

I've waited decades for this chance to exercise my rights to free speech. But the Chinese people have been waiting for centuries.

If there were only one religion in England there would be danger of despotism, if there were two, they would cut each other's throats, but there are thirty, and they live in peace and happiness.

Satire lies about literary men while they live and eulogy lies about them when they die.

Is there no hope? the sick man said, The silent doctor shook his head, And took his leave with signs of sorrow, Despairing of his fee to-morrow.

When you don't know what you're talking about, it's hard to know when you're finished.

I can predict with absolute certainty that within another generation there will be another world war if the nations of the world do not concert the method by which to prevent it.

History is the only laboratory we have in which to test the consequences of thought.

The well-fed man does not believe in hunger.