"With its signal distinction between 'intuition' and 'analysis' and its exploration of the different levels of Duration (Bergson's term for Heraclitean flux), An Introduction to Metaphysics has had a significant impact on subsequent twentieth century thought. The arts, from post-impressionist painting to the stream of consciousness novel, and philosophies as diverse as pragmatism, process philosophy, and existentialism bear its imprint." -- Peter A Y Gunter, University of North Texas.