“He who opens a school door, closes a prison.”
“Good manners open the closed doors; bad manners close the open doors!”
“Man is a prisoner who has no right to open the door of his prison and run away... A man should wait, and not take his own life until God summons him.”
“Write with the door closed, rewrite with the door open.”
“When God closes a door, he opens a window, but it's up to you to find it.”
“No man will be kept in hell loner than is necessary to bring him to a fitness for something better. When he reaches that stage the prison doors will open and there will be rejoicing among the hosts who welcome him into a better state.”