“Don't get so tolerant that you tolerate intolerance.”

“Tolerance of intolerance is cowardice.”

“Tolerance is an attitude of reasoned patience toward evil … a forbearance that restrains us from showing anger or inflicting punishment. Tolerance applies only to persons … never to truth. Tolerance applies to the erring, intolerance to the error … Architects are as intolerant about sand as foundations for skyscrapers as doctors are intolerant about germs in the laboratory. Tolerance does not apply to truth or principles. About these things we must be intolerant, and for this kind of intolerance, so much needed to rouse us from sentimental gush, I make a plea. Intolerance of this kind is the foundation of all stability.”

“The liberal idea of tolerance is more and more a kind of intolerance. What it means is 'Leave me alone; don't harass me; I'm intolerant towards your over-proximity.”

“I have seen gross intolerance shown in support of tolerance. ”

“America, it is said, is suffering from intolerance — it is not. It is suffering from tolerance. Tolerance of right and wrong, truth and error, virtue and evil, Christ and chaos. Our country is not nearly so overrun with the bigoted as it is overrun with the broadminded.”