Can one tolerate something, someone, etc. indefinitely or is there a limit? If there is a limit is there any way of re-igniting tolerance? For instance, if a person in an unhappy marriage, tolerates the situation for a long time (e.g., for the sake of the children) but eventually is unable to put up with the situation - no danger, violence, etc. - just dislike, contempt, etc., for the spouse - is there any way of re-igniting tolerance?