There can be no knowledge of what is good for man apart from knowledge of reality and human nature, and there is no manner in which this knowledge ca… - George H. Smith

A theory of necessary conditions will tend to generate a model of the open society, whereas a theory of necessary and sufficient conditions will tend to generate a model of the closed society. These conflicting models result from the inner logic of ideas. To offer a sketch of what is minimally necessary for a good society is to leave considerable room for diversity, variation, and change. But the available space for individuality will progressively decrease as additional details transform what had been a sketch into a veritable blueprint for the good society.

The significant contribution of empiricism was not the eradication of certainty, but the eradication of infallibility as a criterion of certainty. And this shift from infallibilism to fallibilism has profound consequences not only for toleration, but also for the subordination of faith to reason and theology to philosophy.

Reason is not one tool of thought among many, it is the entire toolbox. To advocate that reason be discarded in some circumstances is to advocate that thinking be discarded—which leaves one in the position of attempting to do a job after throwing away the required instrument.