In the knowledge of nature," Aristotle writes, the test of principles "is the unimpeachable evidence of the senses as to the fact." He holds that "la… - Robert Maynard Hutchins

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In the knowledge of nature," Aristotle writes, the test of principles "is the unimpeachable evidence of the senses as to the fact." He holds that "lack of experience diminishes our power of taking a comprehensive view of the admitted facts. Hence those who dwell in the intimate association with nature and its phenomena grow more and more able to formulate, as the foundation of their theories, principles such as to admit of a wide and coherent development; while those whom devotion to abstract discussions has rendered unobservant of the facts are too ready to dogmatize on the basis of a few observations." Theories should be accredited, Aristotle insists, "only if what they affirm agrees with the facts.