Page:Public Opinion (Lippmann).djvu/190

176 Hippocrates formulated the doctrine of the humors, distinguished the sanguine, the melancholic, the choleric, and the phlegmatic dispositions, and ascribed them to the blood, the black bile, the yellow bile, and the phlegm. The latest theories, such as one finds them in Cannon, Adler, Kempf, appear to follow much the same scent, from the outward behavior and the inner consciousness to the physiology of the body. But in spite of an immensely improved technique, no one would be likely to claim that there are settled conclusions which enable us to set apart nature from nurture, and abstract the native character from the acquired. It is only in what Joseph Jastrow has called the slums of psychology that the explanation of character is regarded as a fixed system to be applied by phrenologists, palmists, fortune-tellers, mind-readers, and a few political professors. There you will still find it asserted that "the Chinese are fond of colors, and have their eyebrows much vaulted" while "the heads of the Calmucks are depressed from above, but very large laterally, about the organ which gives the inclination to acquire; and this nation's propensity to steal, etc., is admitted."

The modern psychologists are disposed to regard the outward behavior of an adult as an equation between a number of variables, such as the resistance of the environment, repressed cravings of several