The banishment of flesh from a correct diet has a thoroughly scientific basis. This kind of food has far too much poisonous uric acid in it, far too much toxic purine to make it a healthy constituent of such a diet. Moreover, it deteriorates the intestinal flora. This will not affect healthy manual-worker types who have enough resistance to throw it off, but it will affect sedentary weaker types.
-- Perspectives > Chapter 5: The Body > # 15