How to use your enemies (Penguin Books)

'Better mad with the crowd than sane all alone.' In these witty, Machiavellian aphorisms, unlikely Spanish priest Baltasar Gracian shows us how to exploit friends and enemies alike to thrive in a world of deception and illusion. Introducing Little Black Classics: 80 books for Penguin's 80th birthday. Little Black Classics celebrate the huge range and diversity of Penguin Classics, with books from around the world and across many centuries. They take us from a balloon ride over Victorian London to a garden of blossom in Japan, from Tierra del Fuego to 16th-century California and the Russian steppe. Here are stories lyrical and savage; poems epic and intimate; essays satirical and inspirational; and ideas that have shaped the lives of millions. Baltasar Gracian (1601-1658). Gracian's work is available in Penguin Classics in The Pocket Oracle and Art of Prudence.