"Essays ... reprinted from the Magazine of fantasy and science fiction [July 1966-Nov. 1967]"
Content Note
Science: Balancing the books. BB or not BB, that is the question. I'm looking over a four-leaf clover. Impossible, that's all! A matter of scale. Kaleidoscope in the sky. The symbolminded chemist. The great borning. Knock plastic!--Numbers: Music to my ears. Old Man River. Crowded! Right beneath your feet. The times of our lives. Non-time travel. Twelve point three six nine.--And I: Portrait of the writer as a boy.