The more experience and insight I obtain into human nature, the more convinced do I become that the greater portion of a man is purely animal. --Henry Morton Stanley, 1887

The large male [gorilla] held my attention. . . . He gave an impression of dignity and restrained power, of absolute certainty in his majestic appearance. I felt a desire to communicate with him. . . . Never before had I had this feeling on meeting an animal. As we watched each other across the valley, I wondered if he recognized the kinship that bound us. --George B. Schaller, 1964