Orson Welles: Who knows what evil lurks in the hearts of men, Orson Welles was the voice of the very popular radio series called "The Shadow". In the show Lamant Cranston returns home after war in which he had become a mad despot in tibet and after learning the error of his ways trains under a monk to refine his mental power to become a warrior of good. his powers allowed him to cloud mens minds and control them and also allowed him to make himself invisible leaving only his shadow. his powers also allowed to read mens minds to find their deepest darkest secrets hence the quote. The Shadow was made into a live action movie in the 1990's with Alec Baldwin as the lead.