" J. Morris Hicks, who wrote Healthy Eating, Healthy World, has this to say about our obsession with protein: Because of the mistaken, yet almost ubiquitous, belief that we humans actually “need” to eat animal protein to be healthy, incredibly powerful solutions to our sustainability crisis don’t even make it to the table for consideration. For this reason, I consider that “protein myth” to be the most serious obstacle in the history of humanity. For if we cannot take the “animal out of the equation” when it comes to feeding humans… the future of our civilization (and even our species) is in peril. "

― Rip Esselstyn , The Engine 2 Seven-Day Rescue Diet: Eat Plants, Lose Weight, Save Your Health