Preaching is to much avail, but practice is far more effective. A godly life is the strongest argument you can offer the skeptic.
“In the same way that we need statesmen to spare us the abjection of exercising power, we need scholars to spare us the abjection of learning.”
“The more we are consuming oil that either comes from places that are bent on our destruction or helping those who are... the more we are enabling those who are trying to kill us.”