The Catechism of the Catholic Church says this:
Even though incorporated into the Church, one who does not however persevere in charity is not saved. (§837)
Charity is love of God and love of our neighbor out of love for God. Is it not perfectly reasonable to say that a man who does not love God will not be saved? Of faith, hope, and charity St. Paul says that the greatest is charity. We are not saved without faith, to be sure, but how can we be saved without love for God? Is that not just plain ridiculous? And since Jesus says (John 14:15) that if we love Him we will keep His commandments, and since the second greatest commandment is to love your neighbor, is it not equally ridiculous to say that the man who hates his neighbor will still go to heaven? Because he shows that he does not love Jesus by that hatred of his neighbor.
Another absurdity comes to us from the Baltimore Catechism:
305 Q. Is prayer necessary to salvation? A. Prayer is necessary to salvation, and without it no one having the use of reason can be saved. (Source)
Again, if we love God, will we not talk to Him? How crazy is it to suggest that I love someone that I refuse to speak with? How do we show we love God by failing to pray?
Loving God and praying to Him are necessary for our salvation. To say otherwise (as some folks might) is nonsense.