The relationships between Heidegger's work on technology, ecology, and art are illustrated by comparison with the art of Paul Klee and Antoni Tàpies. There are some striking similarities between Klee and Heidegger. Heidegger mentioned Klee's work favorably and as an oeuvre comparable to his own on several occasions. Klee's works and writing on nature are the focus of comparison to Heidegger's notion of Being as a form of emerging life. Tàpies had a working knowledge of Heidegger's philosophy and he illustrated his ideas of earth and world, dwelling throughout his oeuvre.