Hilarious, engaging treatise on success. How poorly it explains itself and how much luck is underrated. High acuity observations. Mental efficiency shouldn't be the title in my view, as a proportion of all the topics it was more like a mention.
How things have changed in a century. The love and pursuit of money is more obsessive and ever more elusive. Success in science is not as huge as it was then. Neither the arts. It's more about money fame notoriety now. Few claim contentment with their lot.
For a free ebook on amazon-this offers more value than a lot of paid content