The Master Key System (Unabridged‪)‬

The Master Key is here released to the world as a means of tapping the great Cosmic Intelligence and attracting from it that which corresponds to the ambitions and aspirations of each listener.
The Master Key teaching has been previously published in the form of a correspondence course of 24 lessons, delivered to students one per week for 24 weeks. The listener, who receives the whole 24 parts at one time in this audiobook, is warned not to attempt to listen to it all at once, but to treat it as a course of study and conscientiously to imbibe the meaning of each part - listening and re-listening to only one part per week before proceeding to the next. Otherwise, the later parts will tend to be misunderstood, and the listener's time will be wasted.

Used as thus instructed, The Master Key will make of the listener a greater, better personality, equipped with a new power to achieve any worthy personal purpose and a new ability to enjoy life's beauty and wonder.