Goodness knows how it [genetics of behavior] is to be got at. It may be outflanked or it may yield to attrition, but probably not to direct assault. No scientist is admired for failing in the attempt to solve problems that lie beyond his competence. The most he can hope for is the kindly contempt earned by the Utopian politicians.

The Strange Case of the Spotted Mice and Other Classic Essays, Chapter 4 (p. 42), Oxford University Press. 1996