Have you heard of veganism? We go way back to the civilizations of ancient India and ancient Greece. Where it all began. 
I have but im not a Vegan myself
not only follow a vegan diet but extend the philosophy into other areas of their lives, and oppose the use of animals for any purpose. Another term is "environmental veganism", which refers to the avoidance of animal products on the premise that the industrial farming of animals is environmentally damaging and unsustainable.
Well-planned vegan diets are regarded as appropriate for all stages of life, including during infancy and pregnancy, by the American Academy of Nutrition and Dietetics, Dietitians of Canada, Australian National Health and Medical Research Council
D. Banerjee recounts: "December 1940 – The annual Scouts’ Masters’ Training Camp was held near Humayun’s Tomb ...Rev. Tytler and myself were called upon to help the trainees. J.D and myself were camp mates. ... we talked late into the night. J.D. confided, “Banerjee, I shell be retiring soon, but I will not go back ... I have planned to start a school. Yet there is a ‘BUT’ in it. I do not have enough funds to invest. Could you suggest a