In their choice of lovers both the male and the female reveal their essential nature. The type of human being we prefer reveals the contours of our heart. Love is an impulse which springs from the most profound depths of our beings, and upon reaching the visible surface of life carries with it an alluvium of shells and seaweed from the inner abyss. A skilled naturalist, by filing these materials, can reconstruct the oceanic depths from which they have been uprooted.