Populorum Progressio §15

¹⁵ In God's plan, every man is born to seek self-fulfillment, for every human life is called to some task by God. At birth a human being possesses certain aptitudes and abilities in germinal form, and these qualities are to be cultivated so that they may bear fruit. By developing these traits through formal education of personal effort, the individual works his way toward the goal set for him by the Creator. Endowed with intellect and free will, each man is responsible for his self-fulfillment even as he is for his salvation. He is helped, and sometimes hindered, by his teachers and those around him; yet whatever be the outside influences exerted on him, he is the chief architect of his own success or failure. Utilizing only his talent and willpower, each man can grow in humanity, enhance his personal worth, and perfect himself.