One morning as I was shaving, I realized I was humming a line from a popular song: “Raindrops Keep Fallin’ on My Head.”1 I wondered what had caused me to start humming it. After a moment I realized that it was the rain falling softly on the roof of the house.
For a few seconds I was amused. Then I felt as if I had been struck in the face with a cold, wet washcloth as I realized the startling significance of this fact. My taking in the thought of rain unconsciously, which then caused me to start humming a song about rain without my conscious knowledge, seemed harmless enough. But how many times had I unconsciously accepted an adverse human condition or thought, and let the mental picture influence my thinking and actions, without realizing it?