For many thousands of years the human race has lived on flesh food, especially in the cold countries, and the bodies made with that essence for thousands of years are so dependent upon flesh food that they cannot abstain from it without causing some harm to their health. Man feeds on things of which he is made, and it is not, in every case, easy for a man to give up flesh food, even if he realized its disadvantages. There are countries where there are deserts -- no trees to be found for miles -- and the inhabitants could not live if they did not live on flesh food.