Fortune knocks at every man's door once in a life, — Mark Twain Next Principles aren't of much account anyway, except a “ Fortune knocks at every man's door once in a life, but in a good many cases the man is in a neighboring saloon and does not hear her. Destiny and Overcoming Humor e Ironia Share Share Report an error Comments (0) Log in to post a comment. No comments yet. Be the first to comment.