The cell door slammed behind Rubishov.

In the pun, two strings of thought are tangled into one acoustic knot.

The Régime did not want Communists; it wanted robots. It will take at least a generation to change them back into humans again.

When a chess player looks at the board, he does not see a static mosaic, a 'still life', but a magnetic field of forces, charged with energy - as Faraday saw the stresses surrounding magnets and currents as curves in space; or as Van Gogh saw vortices in the skies of Provence.

Coincidence may be described as the chance encounter of two unrelated causal chains which-miraculously, it seems-merge into a significant event. It provides the neatest paradigm of the bisociation of previously separate contexts, engineered by fate. Coincidences are puns of destiny. In the pun, two strings of thought are tangled into one acoustic knot; in the coincidental happening, two strings of events are knitted together by invisible hands.

Nobody before the Pythagorean had thought that mathematical relations held the secret of the universe. Twenty-five centuries later, Europe is still blessed and cursed with their heritage. To non-European civilizations, the idea that numbers are the key to both wisdom and power, seems never to have occurred.

To want to meet an author because you like his books is as ridiculous as wanting to meet the goose because you like pate de foie gras.