A true saying it is, ‘Desire hath no rest;‘ is infinite in itself, endless; and as one calls it, a perpetual rack, or horse-mill, according to Austin, still going round as in a ring.
Robert Burton, The Anatomy of Melancholy: What It Is, with All the Kinds, Causes, Symptoms, Prognostics, and Several Cures of It. in Three Partitions; With Their Several Sections, Members, and Subsections, Philosophically, Medically, Historically Opened and Cut Up
desire, happiness, hedonic-treadmill, joy, pursuit-of-happiness