Chapter II

The Divergent Directions of the Evolution of Life—Torpor, Intelligence, Instinct

General idea of the evolutionary process—Growth—Divergent and complementary tendencies—The meaning of progress and of adaptation

The relation of the animal to the plant—General tendency of animal life—The development of animal life

The main directions of the evolution of life: torpor, intelligence, instinct

The nature of the intellect

The nature of instinct

Life and consciousness—The apparent place of man in nature