Our Principal Duty

"But the result of popular misconception is that one often forgets that our principal duty to our neighbor is a supernatural one, and that the principal way of satisfying that duty is also a supernatural one.  The most destitute man in the world is the man in the state of mortal sin.  He cannot rise out of his sin without the help of a grace, which he cannot merit strictly for himself.  The greatest work then of fraternal charity is that by which grace is obtained from God for those in mortal sin.  And grace is only obtained by a spiritual life.  The greatest service we can render to our neighbor is to sanctify ourselves."~~Boylan, This Tremendous Lover, ch.16.