We are all full of weakness and errors; let us mutually pardon each other our follies it is the first law of nature.
— Voltaire

It is impossible for you to be angry and laugh at the same time. Anger and laughter are mutually exclusive and you have the power to choose either.
Wayne Dyer mutually quote

If neurotic is wanting two mutually exclusive things at one and the same time, then I'm neurotic as hell. I'll be flying back and forth between one mutually exclusive thing and another for the rest of my days.
— Sylvia Plath

Enjoin this upon the Officers, and let them inculcate, and press home to the Soldiery, the Necessity of Order and Harmony among them, who are embarkd in one common Cause, and mutually contending for all that Freeman sic hold dear. I am persuaded, if the Officers will but exert themselves, these Animosities, this Disorder, will in a great Measure subside, and nothing being more essential to the Service than that it should, I am hopeful nothing on their Parts will be wanting to effect it.
— George Washington

Anthropology provides a scientific basis for dealing with the crucial dilemma of the world today: how can peoples of different appearance, mutually unintelligible languages, and dissimilar ways of life get along peaceably together?
— mutually quotation by Clyde Kluckhohn