Contributions to Philosophy (From Enowning), written in 1936-38 and first published in 1989, is Heidegger's most ground-breaking work after the publication of Time and Being in 1927. If Time and Being is perceived as undermining modern metaphysics, Contributions undertakes to reshape the very project of thinking. In this unusual work, thinking becomes a dimension of time and space, and a historical unfolding of being occurs.