Freud commented several times that there are many dreams in which judgments are passed, criticisms made, or astonishment appears. Such expressions of a critical faculty are not the result of the intellectual task of the dream work, but rather belong to the material of the dream thoughts. Winterstein has found with great regularity that the feeling of astonishment is connected with thoughts about sexual differences, ideas about castration, and the like. It is analogous to what happens when there is actual discovery of differences in sexual organs or size of penis. 'The primary astonishment at the form of the genitals of the other sex may thus find its lifelong continuation in the philosophical astonishment at everything, of which Aristotle speaks.'