This is James Allen's second book. It features fourteen of his inspirational essays, including: The Soul's Great Need, The Competitive Laws and the Law of Love, The Finding of a Principle, At Rest in the Kingdom, The Divine Center, The Eternal Now, The 'Original Simplicity,' The Unfailing Wisdom, The Might of Meekness, The Righteous Man, Perfect Love, Greatness and Goodness, and Heaven in the Heart.

In All These Things Added, Allen addresses everyone's hunger for righteousness and teaches that only by eliminating the selfishness and darkness can one enter the Kingdom of God.

"In seeking for pleasures here and rewards hereafter men have destroyed (in their hearts) the Temple of Righteousness, and have wandered from the Kingdom of Heaven. By ceasing to seek for earthly pleasures and heavenly rewards, the Temple of Righteousness is restored and the Kingdom of Heaven is found." - James Allen