to us, or rather all combinations resulting in “forms,” may be resolved into their original elements, and that these elements are merely Akasa in different states of vibration.  Let the idea of the Oneness of the visible Universe sink deeply into your mind, until it becomes fixed there.  The erroneous conception of diversity in the material world must be replaced by the consciousness of Unity—­Oneness, at the last, in spite of the appearance of variety and manifold forms.  You must grow to see behind the world of forms of Matter, and see the great principle of Matter (Akasa or Ether) back of, within, and under it all.  You must grow to feel this, as well as to intellectually see it.

(2) Meditate over the last mentioned truths, and then follow the matter still further.  Read what we have said in the “Advanced Course” (Lesson XI) about the last analysis of Matter showing it fading away into Force or Energy until the dividing line is lost, and Matter merges into Energy or Force, showing them both to be but the same thing, Matter being a grosser form of Energy or Force.  This idea should be impressed upon the understanding, in order that the complete edifice of the Knowing of the Oneness may be complete in all of its parts.

(3) Then read in the “Advanced Lessons” about Energy or Force, in the oneness underlying its various manifestations.  Consider how one form of Energy may be transformed into another, and so on around the circle, the one principle producing the entire chain of appearances.  Realize that the energy within you by which you move and act, is but one of the forms of this great Principle of Energy with which the Universe is filled, and that you may draw to you the required Energy from the great Universal supply.  But above all endeavor to grasp the idea of the Oneness pervading the world of Energy or Force, or Motion.  See it in its entirety, rather than in its apparent separateness.  These steps may appear somewhat tedious and useless, but take our word for it, they are all helps in fitting the mind to grasp the idea of the Oneness of All.  Each step is important, and renders the next higher one more easily attained.  In this mental drill, it will be well to mentally picture the Universe in perpetual motion—­everything is in motion—­all matter is moving and changing its forms, and manifesting the Energy within it.  Suns and worlds rush through space, their particles constantly changing and moving.  Chemical composition and decomposition is constant and unceasing, everywhere the work of building up and breaking down is going on.  New combinations of atoms and worlds are constantly being formed and dissolved.  And after considering this Oneness of the principle of Energy, reflect that through all these changes of form the Ego—­the Real Self—­YOU—­stand unchanged and unharmed—­Eternal, Invincible, Indestructible, Invulnerable, Real and Constant among this changing world of forms and force.  You are above it all, and it revolves around and about you—­Spirit.