In many of Augustine's sermons, he will say that we are all necessary for each other's salvation - that we're really all called to bring out the best in each other. That's in every aspect of life: religious life, marriage, friendship, single life. It's all about being followers of Jesus. It's not about going at it alone. But going at it together, in various ways, but meeting each other along the way and bringing out the best and bringing each other closer to Christ.