Monsignor Fulton J. Sheen – 1931 essay:

“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.”

“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 refusal to take sides on great moral issues is itself a decision. It is a silent acquiescence to evil. The Tragedy of our time is that those who still believe in honesty lack fire and conviction, while those who believe in dishonesty are full of passionate conviction.”