About the Author

Karl Menninger (1893–1990) was an American psychiatrist from Topeka, Kansas, who helped transform public understanding of mental illness in the 20th century. With his father and brother, he co-founded the Menninger Clinic, which became one of the world’s leading centers for psychiatric treatment, training, and research. He wrote influential books such as The Human Mind and Whatever Became of Sin?, bringing psychiatry into everyday conversation with unusual warmth and moral seriousness. Remembered as a compassionate reformer, Menninger believed healing depended not only on diagnosis and treatment, but also on human connection—making his famous line about love feel like both a clinical insight and a lifelong conviction.