Sometimes he talked, not caring who might be listening, about the healing properties of masturbation (he cited Kant as an example), to be practiced from the earliest years to the most advanced age, which mostly tended to provoke laughter in the girls from the Town of Chattering Girls who happened to hear him, and which exceedingly bored and disgusted his acquaintances in Berlin, who were already overfamiliar with this theory and who thought that Vogel, in explaining it with such stubborn zeal, was really masturbating in front of them or using them as masturbation aids.
