H. Emilie Cady was an American author born in 1848 and died in 1941. Her works mainly focused on personal growth, spirituality, and women's rights, which had a profound impact on the society of the late 19th and early 20th centuries.
Source: LESSONS IN TRUTH - A Course of Twelve Lessons in Practical Christianity: How to Enhance Your Confidence and Your Inner Power & How to Improve Your Spiritual Development