An argument in apologetics, when actually used in dialogue, is an extension of the arguer. The arguer's tone, sincerity, care, concern, listening, and respect matter as much as his or her logic - probably more. The world was won for Christ not by arguments but by sanctity: "What you are speaks so loud, I can hardly hear what you say.
Peter KreeftWe sinned for no reason but an incomprehensible lack of love, and He saved us for no reason but an incomprehensible excess of love.
Peter KreeftWe do not do good works to get into heaven; we do good works because heaven has gotten to us.
Peter KreeftLive in robust sanity, in holy obedience to the ordinary." (The Message) "In an insane asylum like the world, simple sanity can be a heroic achievement.
Peter Kreeft