The New York Academy of Medicine
Freud’s earliest scientific drawings, from his 20’s, are careful renderings of neurons and fibers under t
he microscope, in tissue from fish and the human brainstem.
Late in life, Freud is still drawing, here illustrating his theory of the basic geography of the mind. In German, “Es” is the id, “Ich” the ego and “Überich” the superego.