From the Foreword: 'In presenting these lessons on Mental Science, I do not claim to have discovered any new Truth. The Truth has been known in every age by a few; but the great mass of people has never even dreamed that we live in a mental and spiritual world. To-day, however, there is a great inquiry into the deeper meaning of life because the race has reached a state of unfoldment where a broader scope is possible. These lessons are an attempt to put into the spoken word and into print some of those great truths known to the enlightened of all ages.'