CSDC 15

The direction that human existence, society and history will take depends largely on the answers given to the questions of man's place in nature and society; the purpose of the present document is to make a contribution to these answers. The deepest meaning of human existence, in fact, is revealed in the free quest for that truth capable of giving direction and fullness to life. The aforementioned questions incessantly draw human intelligence and the human will to this quest. They are the highest expression of human nature, since they require a response that measures the depth of an individual's commitment to his own existence. Moreover, it is dealt here with questions that are essentially religious: “When the ‘why of things' is investigated integrally with the search for the ultimate and exhaustive answer, then human reason reaches its apex and opens itself to religiousness. ... religiousness represents the loftiest expression of the human person, because it is the culmination of his rational nature. It springs from man's profound aspiration for truth and is at the basis of the free and personal search he makes for the divine”¹⁸ John Paul II, Address at General Audience (19 October 1983), 2: L'Osservatore Romano, English edition, 24 October 1983, p. 9..