My own first love was biology. I spent a great part of my adolescence in the Natural History museum in London (and I still go to the Botanic Garden almost every day, and to the Zoo every Monday). The sense of diversity—of the wonder of innumerable forms of life—has always thrilled me beyond anything else.
Personal correspondence, quoted in Stephen Jay Gould, "Cabinet Museums: Alive, Alive, O!", Dinosaur in a Haystack (Harmony, 1995), p. 245