Note 19 — FREDERIC THE GREAT’S EULOGY ON JULIEN OFFRAY DE LA METTRIE.
Gertrude Carman Bussey translation
Thus, the diverse states of the soul are always correlative with those of the body.19 But the better to show this dependence, in its completeness and its causes, let us here make use of comparative anatomy; let us lay bare the organs of man and of animals. How can human nature be known, if we may not derive any light from an exact comparison of the structure of man and of animals?