" If the other refuses to respect your No, you may see only two choices: submission and outright war. Yet there is a third choice, highlighted by Gandhi: to underscore your Positive No. Don’t overreact, underscore. To underscore means to emphasize patiently and persistently that No in fact means No. It means continuing to stand up for what is important to you without destroying the possibility of a deal or a healthy relationship. "

― William Ury , The Power of a Positive No: How to Say No and Still Get to Yes