
Sometimes presented in paraphrased form, such as "Example is not the main thing in influencing others, it is the only thing" https://books.google.com/books?id=5Za7o6teOHoC&pg=PR18&dq=%22example+is+not+the+main+thing%22+schweitzer&hl=en&sa=X&ved=0ahUKEwjFh4m9vqvMAhUG02MKHRqZDtsQ6AEIMzAE#v=onepage&q=%22example%20is%20not%20the%20main%20thing%22%20&f=false.
God's Own Man (1952)