43 The structure of baptism, its form as a rebirth in which we receive a new name and a new life, helps us to appreciate the meaning and importance of infant baptism. Children are not capable of accepting the faith by a free act, nor are they yet able to profess that faith on their own; therefore the faith is professed by their parents and godparents in their name. Since faith is a reality lived within the community of the Church, part of a common "We", children can be supported by others, their parents and godparents, and welcomed into their faith, which is the faith of the Church; this is symbolized by the candle which the child’s father lights from the paschal candle. The structure of baptism, then, demonstrates the critical importance of cooperation between Church and family in passing on the faith. Parents are called, as Saint Augustine once said, not only to bring children into the world but also to bring them to God, so that through baptism they can be reborn as children of God and receive the gift of faith. Thus, along with life, children are given a fundamental orientation and assured of a good future; this orientation will be further strengthened in the sacrament of Confirmation with the seal of the Holy Spirit.
Source: Lumen Fidei (Vatican.va)