Here’s just a snippet of Fr. Barron’s excellent column on the importance not just of one’s belief, but of understanding what it is you believe..understanding the foundational bases of your beliefs and convictions.
In our commitment to love and to human dignity, we are, whether we know it or not, operating out of a theological consciousness. When the doctrines and practices that support religious consciousness are dismissed—as they so often are in contemporary secularism—the moral convictions born of that consciousness are imperiled. This is the massively important point missed by those who so blithely say, “it doesn’t matter what you believe, as long as you’re a nice person.”
Read Fr. Barron’s whole column at Fr. Robert Barron’s Word On Fire – If You Want to be a Good Person, It Does Matter What You Believe.