3 Though mankind is stricken with wonder at its own discoveries and its power, it often raises anxious questions about the current trend of the world, about the place and role of man in the universe, about the meaning of its individual and collective strivings, and about the ultimate destiny of reality and of humanity. Hence, giving witness and voice to the faith of the whole people of God gathered together by Christ, this council can provide no more eloquent proof of its solidarity with, as well as its respect and love for the entire human family with which it is bound up, than by engaging with it in conversation about these various problems. The council brings to mankind light kindled from the Gospel, and puts at its disposal those saving resources which the Church herself, under the guidance of the Holy Spirit, receives from her Founder. For the human person deserves to be preserved; human society deserves to be renewed. Hence the focal point of our total presentation will be man himself, whole and entire, body and soul, heart and conscience, mind and will. Therefore, this sacred synod, proclaiming the noble destiny of man and championing the Godlike seed which has been sown in him, offers to mankind the honest assistance of the Church in fostering that brotherhood of all men which corresponds to this destiny of theirs. Inspired by no earthly ambition, the Church seeks but a solitary goal: to carry forward the work of Christ under the lead of the befriending Spirit. And Christ entered this world to give witness to the truth, to rescue and not to sit in judgment, to serve and not to be served.
Source: Gaudium et Spes (Vatican.va)