"The writer of this excellent little book does not profess to have indulged in original research in his preparation, nor does he claim to bring forth new facts concerning its subject. He has, however, made a careful study of the previous biographies of John Knox, and, above all, of the Reformer's own works... He has preferred to deal with the great outstanding periods of Knox’s life and with the vital traits of his character.

He has, in short, tried to produce a vivid impression of the man as he appeared to his contemporaries and as he was in his heart; and he has been wonderfully successful." (cited in Critical Reviews Relating Chiefly to Scotland by David Hay Fleming).