Catechism of the Catholic Church

16 Part One 35 Man’s faculties make him capable of coming to a knowl- edge of the existence of a personal God. But for man to be able to enter into real intimacy with him, God willed both to reveal himself to man and to give him the grace of being able to welcome this revelation in faith. The proofs of God’s existence, however, can predispose one to faith and help one to see that faith is not opposed to reason. III. T he K nowledge of G od A ccording to the C hurch 36 “Our holy mother, the Church, holds and teaches that God, the first principle and last end of all things, can be known with certainty from the created world by the natural light of human reason.” 11 Without this capacity, man would not be able to wel- come God’s revelation. Man has this capacity because he is created “in the image of God.” 12 37 In the historical conditions in which he finds himself, however, man experiences many difficulties in coming to know God by the light of reason alone: Though human reason is, strictly speaking, truly capable by its own natural power and light of attaining to a true and certain knowledge of the one personal God, who watches over and controls the world by his providence, and of the natural lawwritten in our hearts by the Creator; yet there are many obstacles which prevent reason from the effective and fruitful use of this inborn faculty. For the truths that concern the relations between God and man wholly transcend the visible order of things, and, if they are translated into human action and influence it, they call for self-surrender and abne­ gation. The human mind, in its turn, is hampered in the attaining of such truths, not only by the impact of the senses and the imagination, but also by disordered appetites which are the consequences of original sin. So it happens that men in such matters easily persuade themselves that what they would not like to be true is false or at least doubtful. 13 38 This is why man stands in need of being enlightened by God’s revelation, not only about those things that exceed his understanding, but also “about those religious and moral truths which of themselves are not beyond the grasp of human reason, so that even in the present condition of the human race, they can be 11 Vatican Council I, Dei Filius 2: DS 3004; cf. 3026; Vatican Council II, Dei Verbum 6. 12 Cf. Gen 1:27. 13 Pius XII, Humani Generis, 561: DS 3875. 50 159 355 1960 2036