It seems to me that the secret of true happiness in life is to know what you are and then be content to be that, in style, head up and proud, and not yearn to be something else.

Those who refuse to support and defend the state have no claim to protection by that state. Killing an anarchist or a pacifist should not be considered "murder" in a legalistic sense. The offense against the state, if any, should be "Using deadly weapons within city limits," or "Creating a traffic hazard," or other misdemeanor.

You can go wrong by being too skeptical as readily as by being too trusting.

A society that gets rid of all its troublemakers goes downhill.

Please don't invent a debt that does not exist, or next you will be trying to feel gratitude - and that is the treacherous first step toward complete moral degradation.

Around the time of the Terran Caesar Augustus, a Martian artist had been composing a work of art. It could have been called a poem, a musical opus, or a philosophical treatise; it was a series of emotions arranged in tragic, logical necessity. Since it could be experienced by a human only in the sense in which a man blind from birth might have a sunset explained to him, it does not matter which category it be assigned.

Nobody has ever seen an electron. Nor a thought. You can't see a thought, you can't measure, weigh, nor taste it- but thoughts are the most real things in the Galaxy.