Space-ships and time machines are no escape from the human condition.

Learn from the mistakes of others. You can't live long enough to make them all yourself. Boredom sets into boring minds. The more original a discovery, the more obvious it seems afterwards.

Coincidence may be described as the chance encounter of two unrelated causal chains which - miraculously, it seems - merge into a significant event.

God is dethroned; and although the incognizant masses are tardy in realizing the event, they feel the icy draught caused by that vacancy. Man enters upon a spiritual ice age; the established churches can no longer provide more than Eskimo huts where their shivering flock huddles together.

As modern physics started with the Newtonian revolution, so modern philosophy starts with what one might call the Cartesian Catastrophe. The catastrophe consisted in the splitting up of the world into the realms of matter and mind, and the identification of 'mind' with conscious thinking. The result of this identification was the shallow rationalism of l' esprit Cartesien, and an impoverishment of psychology which it took three centuries to remedy even in part.

The cell door slammed behind Rubishov.

The inner censor of the mind of the true believer completes the work of the public censor; his self-discipline is as tyrannical as the obedience imposed by the regime; he terrorizes his own conscience into submission;he carries his private Iron Curtain inside his skull, to protect his illusions against the intrusion of reality.