Plantinga on the sufficiency of natural theology

"I don't think philosophy can show you one way or the other that there is such person as God. I think there are some pretty good arguments for God's existence (philosophical arguments), but I don't think they are sufficiently strong to support the kind of belief that most Christians actually have." (emphasis mine)

"Alvin Plantinga - American Masters of Apologetics Pt.3."Unbelievable?. Premier Christian Radio: 7/26/2008. Web. 14 Nov 2010.(streamed audio).