"Sin is essentially a spiritual disorder in the sinner and the more disordered his conduct is, the graver the sin. "Inordinate" is a word frequently found in St. Thomas [Aquinas’] moral theology. It means straying from the right order of conduct set by God. ... So it is with all the sins, St. Thomas preserves the goodness of life and nature while condemning their abuse. Stealing is bad because it means taking something (something good) which belongs to another without his permission.
"So the more inordinate a sin is, the graver it is; but the order it violates is an order laid down by God; so all sins are against God and the worse the disorder, the more against God."
Carol Robinson, My Life with Thomas Aquinas, Angelus Press, 1995, pp.15-16
"So let us be confident, let us not be unprepared, let us not be outflanked, let us be wise, vigilant, fighting against those who are trying to tear the faith out of our souls and morality out of our hearts, so that we may remain Catholics, remain united to the Blessed Virgin Mary, remain united to the Roman Catholic Church, remain faithful children of the Church."- Archbp. Lefebvre 1980