The mystic receives knowledge of spirit from spirit. Mystics are divinely inspired with knowledge of things divine. There are many paths and practices that can lead to this higher self-knowledge. Imagery is one of them. Return into yourself.
Truth dwells in the inner man.
Guided by the inner wisdom inherent in our soul we can come to a greater understanding, not only of our ego and transcendent self, but of each other and the world in which we live. It is truly a journey worth undertaking. It can begin with a single action. Close your eyes. Centuries later, Sigmund Freud discovered a capacity of the human mind to store repressed information.