Peter Kreeft, Pocket Handbook of Christian Apologetics

"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."

"Reason is flawless, de jure, but reasoners are not, de facto."

"Argumentation is a human enterprise that is embedded in a larger social and psychological context. This context includes (1) the total psyches of the two persons engaged in dialogue, (2) the relationship between the two persons, (3) the immediate situation in which they find themselves and (4) the larger social, cultural and historical situation surrounding them."

"Conscience is thus explained only as the voice of God in the soul."

"If you place [your bet] with God, you lose nothing, even if it turns out that God does not exist. But if you place it against God, and you are wrong and God does exist, you lose everything."

"We can't believe what we believe to be untrue, and we can't love what we believe to be unreal."

"One of the few things in life that cannot possibly do harm in the end is the honest pursuit of the truth."