The Occult Roots of The Wizard of Oz
https://www.wanttoknow.info/insider/11_wizard_of_oz_occult_roots
With its memorable story and its cast of colorful characters, the Wizard of Oz quickly became an American classic. More than a hundred years after the release of this book, kids everywhere are still enchanted by Oz's world of wonder. Few, however, recognize that, under its deceptive simplicity, the story of the Wizard of Oz conceals deep esoteric truths inspired by Theosophy. Here we'll look at the Wizard of Oz's occult meaning and its author's background.
Although the Wizard of Oz is widely perceived as an innocent children's fairy tale, it is almost impossible not to attribute a symbolic meaning to Dorothy's quest. As in all great stories, the characters and the symbols of the Wizard of Oz can be given a second layer of interpretation, which may vary depending on the reader's perception. Many analyses appeared throughout the years describing the story as an "atheist manifesto" while others saw it as a promotion of populism. It is through an understanding of the author's philosophical background and beliefs, however, that the story's true meaning can be grasped.
Blavatsky described what she learned in the 2 volume work, Isis Unveiled. The first volume was subtitled Science, the 2nd Theology.
http://blavatskyarchives.com/theosophypdfs/blavatsky_isis_unveiled_volume_1.pdf/
http://blavatskyarchives.com/theosophypdfs/blavatsky_isis_unveiled_volume_2.pdf