An excerpt from the pastoral constitution on the Church in the modern world from the Second Vatican Council.
Summary: New technologies have drastically changed society, but what is the meaning and value of this feverish activity? (§ 33) We must glorify God in cultivating His creation, which includes the modern triumphs of human progress (§ 34). However our stewardship of the earth requires justice towards our fellow man, which has far greater worth than our technological advances (§ 35).
33. Through his labors and his native endowments man has ceaselessly striven to better his life. Today, however, especially with the help of science and technology, he has extended his mastery over nearly the whole of nature and continues to do so. Thanks to increased opportunities for many kinds of social contact among nations, the human family is gradually recognizing that it comprises a single world community and is making itself so. Hence many benefits once looked for, especially from heavenly powers, man has now enterprisingly procured for himself.
In the face of these immense efforts which already preoccupy the whole human race, men agitate numerous questions among themselves. What is the meaning and value of this feverish activity? How should all these things be used? To the achievement of what goal are the strivings of individuals and societies heading? The Church guards the heritage of God’s word and draws from it moral and religious principles without always having at hand the solution to particular problems. As such she desires to add the light of revealed truth to mankind’s store of experience, so that the path which humanity has taken in recent times will not be a dark one.
34. Throughout the course of the centuries, men have labored to better the circumstances of their lives through a monumental amount of individual and collective effort. To believers, this point is settled: considered in itself, this human activity accords with God’s will. For man, created to God’s image, received a mandate to subject to himself the earth and all it contains, and to govern the world with justice and holiness;  a mandate to relate himself and the totality of things to Him Who was to be acknowledged as the Lord and Creator of all. Thus, by the subjection of all things to man, the name of God would be wonderful in all the earth. 
This mandate concerns the whole of everyday activity as well. For while providing the substance of life for themselves and their families, men and women are performing their activities in a way which appropriately benefits society. They can justly consider that by their labor they are unfolding the Creator’s work, consulting the advantages of their brother men, and are contributing by their personal industry to the realization in history of the divine plan. 
Thus, far from thinking that works produced by man’s own talent and energy are in opposition to God’s power, and that the rational creature exists as a kind of rival to the Creator, Christians are convinced that the triumphs of the human race are a sign of God’s grace and the flowering of His own mysterious design. For the greater man’s power becomes, the farther his individual and community responsibility extends. Hence it is clear that men are not deterred by the Christian message from building up the world, or impelled to neglect the welfare of their fellows, but that they are rather more stringently bound to do these very things. 
35. Human activity, to be sure, takes its significance from its relationship to man. Just as it proceeds from man, so it is ordered toward man. For when a man works he not only alters things and society, he develops himself as well. He learns much, he cultivates his resources, he goes outside of himself and beyond himself. Rightly understood this kind of growth is of greater value than any external riches which can be garnered. A man is more precious for what he is than for what he has.  Similarly, all that men do to obtain greater justice, wider brotherhood, a more humane disposition of social relationships has greater worth than technical advances. For these advances can supply the material for human progress, but of themselves alone they can never actually bring it about.
Hence, the norm of human activity is this: that in accord with the divine plan and will, it harmonize with the genuine good of the human race, and that it allow men as individuals and as members of society to pursue their total vocation and fulfill it.
- Cf. Gen. 1:26-27; 9:3; Wis. 9:3.
- Cf. Ps. 8:7 and 10.
- Cf. John XXIII, encyclical letter Pacem in Terris: AAS 55 (1963), p. 297.
- Cf. Message to all mankind sent by the Fathers at the beginning of the Second Vatican Council, Oct. 20, 1962: AAS 54 (1962), p. 823.
- Cf. Paul VI, Address to the diplomatic corps Jan 7 1965: AAS 57 (1965), p. 232.