New Author on biotechnology
The linchpin of his argument lies in the argument that the Church's understanding of sexual difference and activity is connected to worship:
Strictness in reproductive matters arises from the Church's understanding that sexual difference and activity is intimately linked to worship of God in history. Stress should be placed more on its worshipful character than on violation of the natural. Sexuality must be treated as a sacrament symbolic of Christ's love for His Church, as something more significant than, say, digestion.