A good read for stretching a mind constricted from reading textbooks. Here's an example: The immune system isn't part of the brain. The brain is part of the immune system. Mind is an arm raised against things too large to be destroyed by antibodies and cytotoxic T lymphocytes, the microscopic weapons of the immune system. The immune system is for plague, tuleramia, toxoplasmosis, measles, mumps, and chicken pox. Mind is for bears, coral snakes, sharks, snapping turtles, wife beaters, and Buicks.