A thinker from this school of thought was praised for his clear two-parted definitions of “windlessness” and “calm-on-the-ocean.” Those definitions might have used the “harmony” of limiters and the unlimited, concepts another thinker from this school used to define the first non-geocentric model of the universe. Archytas and (15[1])Philolaus were two philosophers from this school, whose founder stopped the (*) beating of a puppy upon recognizing its voice (10[1])as his former friend’s. Plato’s Phaedo (“FYE-doe”) draws on this school’s belief in metempsychosis. This school’s experiments in string tuning led to its (10[1])doctrine (10[1])of a “music of the spheres.” For 10 points, name this school founded by a mathematician who names a theorem about the right triangle. ■END■