Certainty is a confession of ignorance about our ability to be profoundly mistaken. Humans will always argue passionately about things that we do not know and cannot know, but with a little more self-knowledge and humility; we may get to the point where those arguments are less often lethal. Valerie Tarico; The Christian Delusion: Why Faith Fails (2010), John W. Loftus, editor; Cure-for-Christianity Knockout Quote No. 310; www.tentoughproblems.com