Paracelsus, quote, the power of imagination

"The power of imagination is a great factor in medicine. It may produce diseases in man and in animals and it may cure them. But this is not done by the powers of symbols or characters made in wax or being written on paper, but by an imagination, which perfects the will. All the imagination of man comes from the heart. The heart is the seed of the microcosm, and from that seed the imagination proceeds into the macrocosm. Thus the imagination of man is a seed that becomes materialized or corporeal."