These are not simply lectures; they are, rather, lessons. They are not merely to be read; they are to be studied and applied as one studies and applies mathematical rules. When the text suggests that the reader "hold a thought," or affirm or deny a certain proposition, the student should stop reading, and both audibly and mentally do as bidden. This will set up new thought currents in mind and body, and will make way for the spiritual illumination that will follow in all who are faithful to these instructions. These are not simply lectures; they are, rather, lessons. They are not merely to be read; they are to be studied and applied as one studies and applies mathematical rules. When the text suggests that the reader "hold a thought," or affirm or deny a certain proposition, the student should stop reading, and both audibly and mentally do as bidden.