Colin Marshall talks to design philosopher, bookmaker, and man of aesthetics Leonard Koren. In addition to publishing WET: The Magazine of Gourmet Bathing in the 1970s and providing consultancy on certain aesthetic matters, he’s created books like Wabi-Sabi for Artists, Designers, Poets & Philosophers, How to Rake Leaves, and Undesigning the Bath. He takes on the very meaning of the term “aesthetics” in his latest title, Which “Aesthetics” Do You Mean?: Ten Definitions.