"My mind was by no means easy about the need to carry out a clandestine action in the sovereign territory of a friendly country, and the question of whether it was permissible to do so — from both the ethical and political points of view — had to be faced in all its gravity."

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I also came to see that liberalism's superficial optimism concerning human nature caused it to overlook the fact that reason is darkened by sin. The more I thought about human nature the more I saw how our tragic inclination for sin causes us to use our minds to rationalize our actions. Liberalism failed to see that reason by itself is little more than an instrument to justify man's defensive ways of thinking. Reason, devoid of the purifying power of faith, can never free itself from distortions and rationalizations.

— Martin Luther King, Jr.