How to Convince/Explain?

“At the time I had not yet come across Saint Augustine's famous dictum, 'We do not first understand in order to believe; we must first believe in order to understand.' I was still laboring under the impression that the human mind could not fail to be convinced if matters were properly explained. I had not yet come to the realization that human beings, on the whole, are largely subjective creatures and that we make our judgments about practically everything on the basis of impressions—on our fundamental perception of how creation works.”
~Michael O’Brien