This book is a practical, not philosophical - a practical guide, not a theoretical treatise. It is designed for people whose greatest need is money; for those who want to get rich first, and then philosophize. It is for those who want to get results, who wishes to take scientific findings as a basis for action, without detailed consideration of all the processes by which they were obtained.

Books Wattles helped many people around the world. His work has had an impact on the well-known writers such as Napoleon Hill, Robert Schuller, Anthony Robins. Rhonda Byrne said in an interview with "Newsweek", the book "Science of Getting Rich" and the work of another writer, "New Thought" by William Walter Atkinson, inspired her to create a movie-bestseller "The Secret" ("Mystery") and the same book.