Carl Jung, Liber Novus: Liber Secundus: 158
What is beyond the human that appears in love has the nature of the serpent and the bird, and the serpent often enchants the bird, and more rarely the bird bears off the serpent. Man stands in-between. What seems like a bird to you is a serpent to the other, and what seems like a serpent to you is a bird to the other. Therefore you will meet the other only in human form. If you want to become, then a battle between bird and serpent breaks out. And if you only want to be, you will be a man to yourself and others.
Themes
Carl Gustav Jung (1875-1961), often referred to as C. G. Jung, was a Swiss psychiatrist and psychotherapist who founded analytical psychology. Jung proposed and developed the concepts of extraversion and introversion; archetypes, and the collective unconscious.