Lesson X. - Mentalism in a Nutshell - p.81
In the Arcane Teaching we have shown that the fundamental principle of Mentalism, in all of its forms, is the fact that the Cosmos itself is One Universal Mind, and that the Manifested Cosmos may be likened to a great Universal Brain, in which the forms of things and life are but as thought forms in the human brain. There is Mind in everything, and everything is in Mind. Consequently, just as Thoughts become Things in the Cosmic Brain, so is it possible for a strongly concentrated and focalized Mind (Will) to materialize into objective form things and conditions on the material plane. Just as the Cosmic Will manifests the Cosmic activities and forms, so may the Individual Will materialize activities and forms on its own plane.
There is but one difference between the Cosmic Will and the Individual Will --- the difference in degree. All Will, from the Cosmic Will to the feeblest Individual Will is identical in nature, although widely