Esoteric science, the Wisdom religion, embraces all that is good and true in the great religions of mankind, but yet transcends them all. As far as can be expressed in words, it reflects truth, insisting of the unity of the cosmic process in which each individual is as a spark to the flame. We are of like nature with the Cosmos, and, being of one Essence, we are members of one family, a family that includes all things and all beings. In this book the author has attempted to offer an outline of Esoteric Science, with abundant reference to the great literature in which the student may discover for himself some of the scope and grandeur of the Wisdom Tradition.