Too Long; Didn't Read

In the building of the nest, the family safeguard, we see the highest manifestation of the faculties of instinct. That clever architect, the bird, teaches us as much; and the insect, with its still more diverse talents, repeats the lesson, telling us that maternity is the supreme inspirer of instinct. Entrusted with the preservation of the species, which is of more importance than the preservation of individuals, maternity awakens in the drowsiest intelligence marvellous gleams of foresight; it is the thrice sacred hearth where are kindled those mysterious psychic fires which will suddenly burst into flame and dazzle us with their semblance of infallible reason. The more maternity asserts itself, the higher does instinct ascend.