4’ - The Multiple Mentality Course

"The Multiple Mentality Course," authored by Harry Kahne and published in the early 1920s, presents a series of exercises designed to enhance mental power and flexibility. Kahne asserts that the modern age has caused a decline in mental capabilities due to specialization and reliance on technology, advocating for a more holistic approach to thinking. He argues that through a series of mental drills, individuals can develop their ability to think concurrently, enhance memory, and cultivate creative imagination. The course aims to expand mental capacity and equip individuals to tackle challenges and succeed in various domains such as business, public speaking, and everyday life. Kahne emphasizes the importance of practicing the exercises diligently, as he believes that mastery of these mental gymnastics can lead to greater personal and professional fulfillment.