Man is the keystone of the arch of material life, whereas an animal lives solely under the impulses of self-preservation and self-procreation. Only in man can this Divine Being arrive at Self-consciousness, because only man can develop intelligence in its fullness. The intelligence which animals possess, however excellently it suffices them, is after all one which is concerned purely with objective things. Animals cannot move in the realm of abstract ideas, but man can escape from the concrete through his developed reason, his religious feeling, his mystic intuition.
-- Notebooks Category 26: World-Idea > Chapter 4: True Idea of Man > # 24