Instinct is like nature herself prodigiously conservative, and yet transcending her own historical conditions in her acts of creation.
Instinct is prior to intellect and carries a similar appearance to it, for example, when a young dog fears to jump down from the table... it foresees the effect of the fall not by reasoning (for it has no experience of such a fall) but by instinct.
Instinct is an action similar to that which is guided by the conception of an end, and yet is entirely without an end.
Instinct is nature that seeks to perpetuate nature. It contrasts itself with consciousness which is nothing other than man's turning away from and opposing himself to instinct in favor of culture.
Instinct is in the will, as seen best in reproduction, which is placed almost entirely beyond control of knowledge or reflection.