- To apply reason is to calculate, to think; to offer in statement the justification for one’s intellectual position, or a rational motive and logical defense for a course of action. Reason is what makes fact intelligible.
- To reason is to engage in the applied effort of comprehending, inferring, and thinking in orderly, rational ways; to identify cause and effect. Reason is the power of the intellect by which man attains to truth or knowledge; the process of thinking rightly and justifiably.
- See also: Reasoning
Christianity and reason
Christian apologetics is the defense of the Christian faith through logic/evidence based arguments. The term comes from the Greek word apologia, which means "defense". In addition, Christian apologist point out the falseness and deficiencies of opposing worldviews. John Gresham Machen declared, "False ideas are the greatest obstacles to the reception of the gospel".
- See Stanford Encyclopedia of Philosophy: Kant's Account of Reason Consistency in observations is generally sufficient to confirm everyday knowledge claims: "the law of reason to seek unity is necessary, since without it we would have no reason, and without that, no coherent use of the understanding, and, lacking that, no sufficient mark of empirical truth…"
See also Catholic Encyclopedia: Reason. Man is rational in the sense that he is a being who arrives at conclusions from premises. Our intellectual life is a process, a voyage of discovery; our knowledge is not a static ready-made whole; it is rather an organism instinct with life and growth. Each new conclusion becomes the basis of further inference.
- The War on Reason