Colin Wilson revitalised existentialism with a completely new approach to the philosophy. The six volumes of his ‘Outsider’ series created an existentialism that is not paralysed by its own nihilism. This book, first published in 1966, is a clear summary of the ideas of the ‘Outsider’ cycle, and also develops them to a new stage. Wilson’s ‘new existentialism’ sees philosophy as an intellectual adventure that aims at a real command and control of human existence, and this book is its clearest exponent.