"When a woman gives birth to a child, the child needs to be able to digest the mother's milk; but when this child is old enough to begin to eat other foods, there is some switching off of this ability to consume milk"
This quote is written / told by Marvin Harris between August 18, 1927 and October 25, 2001. He/she was a famous Scientist from USA.
The author also have 18 other quotes.