Roman Catechism 16.67

Chapter 16 — Part II: The Sacraments — Baptism

Section 67. Finally, as the Apostle teaches, if by one man's offence death reigned through one, much more they who receive abundance of grace, and of the gift, and of justice, shall reign in life through one, Jesus Christ. If, then, through the transgression of Adam, children inherit original sin, with still stronger reason can they attain through Christ our Lord grace and justice that they may reign in life. This, however, cannot be effected otherwise than by Baptism.