advanced mathematician or the simple example of the beginner, so do the fundamental principles of spiritual science work unerringly in simple healing or in the solution of the great problems of life.

There is mathematical rigor in the demand of this science for absolute correctness of demonstration before the student is able to proclaim his answer correct. We never hear of the "absurdity" of mathematics because it deals with things beyond the sense. On the contrary, everybody trusts this mighty arm that reaches up and counts the stars and measures the shining universe. Everybody believes in the mathematician's unfailing power to compute the day and moment of the reappearance of a comet or the darkening of the sun or moon by eclipse. Of course, it seems very wonderful to those who are familiar with only its fundamental principles to see mathematics reach up and out and solve the secrets of all dimension. Yet, they believe because it is demonstrated --- and that is wise.

Now, dear student, the three essentials to success in the study of mathematics are also the three essentials to success in the study of spiritual science. They are: understanding of its fundamental principles; pure and unbiased reasoning; ability to prove that the principle is workable.

The great problem we shall work up to admits of no guesswork. It has been bungled