John Wyndham (1903 1969) began writing and selling short stories in 1925 to periodicals, under a wide array of pseudonyms. After spending the Second World War in the English civil service and later the British Army, he began experimenting with the idea of speculative fiction, a new kind of science fiction which he employed in two of his most successful novels, "The Day of the Triffids" and "The Chrysalids".