"Although I knew enough Freud to believe that the sex urge was an important mainspring of life, it still seemed to me that any conscious manifestation of sex was necessarily ludicrous. Defecation and copulation were two activities which made a human being totally ridiculous. At least the former could be conducted in private, but the latter by definition demanded a partner. I discovered, though, that whenever I ventured this opinion, people took it as a joke."