Medical researchers don't know much about head lice because they don't much care. The reason that they don't much care is, paradoxically, that they know a lot. That is, they know one important thing: there is no evidence that head lice transmit disease.

In Henry Adams, I discovered not only the prototype of the modern thinker but also someone who is more interesting: a viper-toothed, puling, supercilious crank, thwarted in ambition, aging gracelessly, mad at the cosmos, and ashamed of his own jejune ideals. He is nevertheless very dear to me.

Head lice have their own animal-rights group, or may as well. The National Pediculosis Association doesn't exactly advocate letting lice live with dignity, but it does oppose pediculicidal treatments.

P. J. O'Rourke Quotes