The twelve lessons forming this volume were originally issued in the shape of monthly lessons.
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?These lessons were intended as a continuation of, or sequel to “The Fourteen Lessons in Yogi Philosophy and Oriental Occultism” issued during the previous year. We have been urged to print these “Advanced Course” lessons in book form, and the present volume is the result.
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?Lessons i to iv, inclusive, consist of an analysis and explanation of the little occult manual known as “Light on the Path,” and have been highly praised by lovers of that little book as well as advanced students in occultism. They are said to be superior to anything ever written along these lines.
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?Lessons v to vii, inclusive, treat of the several branches of the Yogi Philosophy indicated by their titles. They contain very much information in a small space.
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?Lessons viii and ix, treat of Dharma, the Yogi philosophy of Ethics or Right Action. They have been favorably received by students of ethics, and teachers of morality of different schools.

Lessons x to xii, inclusive, form a wonderful trio of lessons upon the higher Yogi metaphysical and scientific teachings. Their clearness and comprehensiveness is startling, and the most perplexing metaphysical and scientific questions are answered in the simplest manner by the centuries old, Yogi philosophy expressed in modern terms.