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To be a fully functioning moral agent, one cannot passively accept moral principles handed down by fiat. Moral principles require moral reasoning.

Michael Shermer (2005). “The Science of Good and Evil: Why People Cheat, Gossip, Care, Share, and Follow the Golden Rule”, p.16, Macmillan
To be a fully functioning moral agent, one cannot passively accept moral principles handed down by fiat. Moral principles require moral reasoning.