Pigs prefer to wallow in clean mud, but if nothing else is available, they will frequently wallow in their own urine, giving rise to the notion that they are dirty animals.
Marvin HarrisEvery theory presented as a scientific concept is just that; it's a theory that tries to explain more about the world than previous theories have done. It is open to being challenged and to being proven incorrect.
Marvin HarrisLike most North Americans, I'd been raised on the notion that milk is the first food, and everybody must like it because it's so good and so important for growing up and for being healthy.
Marvin Harris