"I advance no exaggerated or fanciful claim for Vegetarianism. It is not, as some have asserted, a "panacea" for human ills; it is something much more rational—an essential part of the modern humanitarian movement, which can make no true progress without it. Vegetarianism is the diet of the future, as flesh-food is the diet of the past."
January 1, 1970
https://en.wikiquote.org/wiki/Vegetarianism