text: This theory inspired Rudolf Steiner's method of classifying children in the Waldorf educational system.
full_question: This theory inspired Rudolf Steiner's method of classifying children in the Waldorf educational system. A 1946 George Balanchine ballet with music by Paul Hindemith was inspired by this theory. Dyscrasia should be avoided according to this theory, whose basic concepts inform Robert Burton's encyclopedic treatise Anatomy of Melancholy. This theory inspired a play in which the servant Brainworm defies the orders of Old Kno'well, an early comedy by Ben (*) Jonson. A believer in this theory might assume that an excessively cheery, or "sanguine," temperament results from vapors in the brain. For 10 points, name this now- discredited theory which attributed personality traits to a bodily imbalance between blood, phlegm, yellow bile, and black bile.
first_sentence: This theory inspired Rudolf Steiner's method of classifying children in the Waldorf educational system.
raw_answer: theory of the four humors [or humorism; accept four classical temperaments before "temperament" and prompt afterwards; prompt on "four classical elements" or "ancient Greek medicine"]