Some determined advocates of the vegetable system maintain, that the teeth and stomach of the monkey correspond, in structure, very closely with that of man, yet it lives on fruits – therefore if man followed nature, he would live on fruits and vegetables. But though the anatomical likeness between man and monkeys is striking, yet it is not complete; the difference may be and doubtless is precisely that which makes a difference of diet necessary to nourish and develope their dissimilar natures. Those who should live as the monkeys do would most closely resemble them.