Includes Wallace D. Wattles most famous works: The Science of Getting Rich The Science of Being Great The Science of Being Well Wallace Delois Wattles (1860 - 1911) was an American author. A New Thought writer, he remains personally somewhat obscure, but his writing has been widely quoted and remains in print in the New Thought and self-help movements. Wattles' best known work is a 1910 book called The Science of Getting Rich in which he explained how to become wealthy.