Revenge is always the weak pleasure of a little and narrow mind.
— Juvenal

He was so narrow-minded he could see through a keyhole with two eyes.
— Black Elk

I will permit no man to narrow and degrade my soul by making me hate him.
— Booker T. Washington

The most learned are often the most narrow minded.
— William Hazlitt

Every life is narrow. Our only escape is not to run away, but to learn to love the people we are and the world in which we find ourselves.
— Mark Haddon