Underlying this erroneous tendency, as Faith has pointed out many times over the last forty years, is the implicit or explicit denial
of the transcendence
of God, the Divinity
of Christ, the historical objectivity
of revelation and the authority
of the Church in matters
of faith and
morals, and also the denial
of the spiritual soul as a
principle of existence that is distinct from yet integrates the material within the unity
of our human nature.
The natural law is a body
of unchanging
moral principles known not from
revelation (though parallel to it) but by reason,
principles regarded as a basis for all human conduct: to speak in this way
of «the humanisation
of sexuality» is simply the understanding
of the natural law in particular human circumstances: there is no movement away from natural law - say, to
revelation or ecclesial authority; we are stillwithin its ambit.