This paper critically examines the philosophical foundations of Colin Wilson’s New Existentialism. I will show how Wilson’s writings promoted a phenomenological strategy for understanding states of ecstatic affirmation within so-called ‘peak experiences’. Wilson subsequently attempted to use the life affirming insights bestowed by peak states to establish an ontological ground for values to serve as a foundation for his New Existentialism. Because of its psychological focus however, I argue that Wilson’s New Existentialism contains an ambivalent framework for establishing ontological categories, (...) which leads his thought into theoretical difficulties. More precisely, Wilson’s strategy runs into problems in coherently integrating its explicitly psychological interpretation of Husserl’s theory of intentionality within a broader, and philosophically coherent, phenomenological framework. Wilson’s psychological reading of Husserl’s transcendental reduction, for example, manifests tensions in how it reconciles the empirical basis of acts of transcendence with an essentialist conception of the self as a transcendental ego. The above tensions, I argue, ultimately render the New Existentialism susceptible to criticism from a Husserlian-transcendental perspective. After outlining a Husserlian critique of Wilson’s position, I end the paper by suggesting how some of the central insights of the New Existentialism might help to bridge the gap that persists between pure phenomenological description and metaphysics. (shrink)