|Hamlyn SF paperback, 1980. Illustration by Tim White.|
"It was a circular city - like the City of the Sun, a perfect community dreamed up by the seventeenth-century philosopher Campanella.
Many utopian groups had emigrated into space to found their ideal settlements. And it was on one such colony world - appropriately called Arcadia - that the recontact starship Daedalus made its fourth planetfall. There in all its splendour stood the fulfilment of Campanella's dream - the real seven-circled City of the Sun.
But the city was too ordered, the inhabitants too perfect, the world too Arcadian ... and very soon the Daedalus's scientists realized that in this particular utopia the idealists had unleashed a force that could undermine all human culture on other planets."