This volume develops and defends critical realism whilst engaging critically with existentialist philosophy in a number of ways. The work of existentialist thinkers as diverse as Kierkegarrd, R.D. Laing, Heideggar and Sartre is discussed at length and Andrew Collier argues that there is much to be learnt from their work, especially in Heidegger's critique of the technological view of the world. However the book concludes with a defence of objectivity against the various forms of subjectivism advanced by the existentialists.