That line caught my attention, as well...fifty or sixty years ago; you might have made a credible argument for that statement. The tipping point toward the pit of hell came when the God of Abraham, Issac and Jacob was thrown out of the classroom. Since there are so few of a like mind here in Red England, I find peace in the garden this time of year. (Salsa addiction; the hotter, the better...what can I say?)
Fifty or sixty years ago, Christians knew that
1) God made Man "very good"
2) Man thoroughly corrupted his nature through Original Sin.
Christians may argue with each other over the extent of the corruption, but not over the fact of its existence. Christianity has ALWAYS rejected the idea that Man is 'inherently good'.