Do atheists and religious believers need each other?

Susan Cain theorizes that religious believers and atheists need each other. Atheists may point to truths uncovered by scientific inquiry, while believers may point to truth that has been discovered through faith. Either way, Susan writes, here's to

the spirit of the religious holidays/the Winter Solstice (take your pick!).

I agree with Susan. It is truth we all need and want. Let's get on with it!