“The Imagination and the Unconscious”
S. Foster Damon writes that for Paracelsus the imagination was “the central function of man and the source of all his activities.”* This deeply influenced Blake, who “made this unobtrusive dethronement of reason a central fact in his own system.”
Reason is only in the conscious mind, whereas imagination, “the source of all [our] activities,” is the unconscious.
So did Paracelsus and Blake prepare for Freud.
* A Blake Dictionary, p. 322.