II. The Logic of Thought and the Logic of Reality

Mach holds a similar view. It was Mach of whom I told you how he once got into an omnibus where there was a mirror. As he got in, he saw a man coming in from the other side. Now the appearance of this man was highly antipathetic to him, and he said to himself: “What a weedy-looking schoolmaster.”—only then did he perceive that there was a mirror hanging there and that he had simply seen himself. Mach tells the story to indicate how little one knows oneself, even in one's external human form how little self-knowledge man has. He even tells of another occasion when he passed a shop window which acted as a mirror and thus again met himself and was quite annoyed to come across such an ugly-looking pedant.