A believer is an evangelist primarily by who he is and how he lives-not by what he says. What he says is important; but unless his speaking tallies with what he is and does, he had better keep quiet.
Joseph Sittler, Steven Bouma-Prediger, Peter W. Bakken (2000). “Evocations of Grace: The Writings of Joseph Sittler on Ecology, Theology, and Ethics”, p.202, Wm. B. Eerdmans Publishing