The enemies of intellectual liberty always try to present their case as a plea for discipline versus individualism. The issue truth-versus-untruth is as far as possible kept in the background.

To hang on from day to day and from week to week, spinning out a present that had no future, seemed an unconquerable instinct, just as one's lungs will always draw the next breath so long as there is air available.

The end was contained in the beginning.

During part of 1941 and 1942, when the Luftwaffe was busy in Russia, the German radio regaled its home audience with stories of devastating air raids on London. Now, we are aware that those raids did not happen. But what use would our knowledge be if the Germans conquered Britain? For the purpose of a future historian, did those raids happen, or didn't they? The answer is: If Hitler survives, they happened, and if he falls they didn't happen.

Happiness can only exist in acceptance.

A dirty joke is not, of course, a serious attack on morality, but it is a sort of mental rebellion, a momentary wish that things were otherwise.

For, after all, how do we know that two and two make four? Or that the force of gravity works? Or that the past is unchangeable? If both the past and the external world exist only in the mind, and if the mind itself is controllable – what then?