Reinhard_Heini
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This is actually the Catholic tradition, as expostulated by St. Augustine ("of all sins belonging to lust, that which is against nature is the worst") and given logical form by St. Thomas Aquinas in the Summa Theologica. He covers this in Article 12, Whether the unnatural vice is the greatest sin among the species of lust?
Aquinas admits (Objection 1) that seduction and rape are contrary to charity, and that masturbation might seem like a less serious matter because it causes no injury to persons. But he rejects this view. Aquinas states his own logic most clearly in his Reply to Objection 1:
Aquinas admits (Objection 1) that seduction and rape are contrary to charity, and that masturbation might seem like a less serious matter because it causes no injury to persons. But he rejects this view. Aquinas states his own logic most clearly in his Reply to Objection 1:
As the ordering of right reason proceeds from man, so the order of nature is from God Himself: wherefore in sins contrary to nature, whereby the very order of nature is violated, an injury is done to God, the Author of nature.