Theoretical considerations require that what is to-day the object of a phobia must at one time in the past have been the source of a high degree of p… - Sigmund Freud

Civilized society is perpetually menaced with disintegration through this primary hostility of men towards one another.

Man found that he was faced with the acceptance of "spiritual" forces, that is to say such forces as cannot be comprehended by the senses, particularly not by sight, and yet having undoubted, even extremely strong, effects. If we may trust to language, it was the movement of the air that provided the image of spirituality, since the spirit borrows its name from the breath of wind (animus, spiritus, Hebrew: ruach = smoke). The idea of the soul was thus born as the spiritual principle in the individual. Observation found the breath of air again in the human breath, which ceases with death; even today we talk of a dying man breathing his last. Now the realm of spirits had opened for man, and he was ready to endow everything in nature with the soul he had discovered in himself.

Thus we arrive at the singular conclusion that of all the information passed by our cultural assets it is precisely the elements which might be of the greatest importance to us and which have the task of solving the riddles of the universe and of reconciling us to the sufferings of life — it is precisely those elements that are the least well authenticated of any.