RESUMEN:
La reflexión sobre la ley natural no puede hacerse como si Dios no existiera. Sin la referencia a Dios, y en última instancia, sin referencia a Cristo, la reflexión sobre la ley natural queda muy incompleta, es poco convincente, y en cualquier caso, desalentadora, porque el hombre no tiene fuerzas para vivir fielmente, por sí mismo, las exigencias de la ley natural.


TEXTUAL:
It is of course true that a rational discourse on the moral order should be able to stand on its own without the support of faith, but this does not mean that the practical living out of the ethos presented by the natural law is possible without the life of grace. Even Adam, according to Aquinas,[9] in the state of original justice needed the support of grace, although he did not need to apply that grace to so many wounded spheres of human existence as we do.

Moral teaching needs to be coupled with an initiation into the spiritual life grounded in Christ, as without it, reduced to a Pelagian rigorism, it generates an instinctive defensive reaction. It should come as no surprise that non-Christians, when told about the possibility of living out the ethos of the Sermon of the Mount on the basis of a personal relationship with Christ are intrigued and fascinated, while argumentation based on metaphysical principles and the natural law does not seem to convince them.[10]

The purpose of the natural law reflection is to show that the high ethos, made possible through faith in Christ, is not a deformation of nature, but an eliciting of the profoundest inclinations already existing within nature. That is why the graced person is pleasing in his or her naturalness.

This does not however mean that the preaching of Christ within the moral order is optional, and that moral propriety may be socially guaranteed uniquely on the basis of a natural law morality. The suggestion that one may successfully engage in moral discourses exclusively on the level of ratio -- "etsi Deus non daretur" [as if God didn't exist] -- in view of convincing intellectually nonbelievers may be a noble cause, but it is condemned to failure.

Too much is expected then from the rational discourse, which cannot in itself supply such a force of conviction that would move the heart, influence the will and enable perseverance in moral truth. Whereas, an introduction into the spiritual life illuminates the mind, opening it to the mysterious perspective of encountering God and it strengthens the will enabling it to persevere in its attachment to the true good, without in any way, denying the value of the clarity of natural law reflection.



CONCLUSION

(...)

Reflection on moral responsibilities needs to be undertaken, "etsi Deus daretur," believing in the fullness of God's gift that includes not only the creation of the cosmos with its inherent recognizable order, but also the redemption given through Jesus Christ and the accompanying grace of the Holy Spirit.

It is in the light of this renewing gift of grace that not only the functioning of the intellect, but also the functioning of the will and the dynamism of the affectivity, as also the practical responses to concrete moral challenges need to be viewed. Not only "fides et ratio," a study of reason in the light of faith, but also "fides et liberum arbitrium" [free will], and "fides et passio" [passion] are needed.



FUENTE:
GIERTYCH, Wojciech: 4 Resistance to natural law ethics


FUENTE AMPLIADA:
GIERTYCH, Wojciech: "Problems and Prospect" on Natural Law Ed. , Roma, 3000 (2007)


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