"A workable definition of spirituality is one's emotional relationship with unanswerable questions."
Religion therefore might be thought of as means of providing answers to unanswerable questions. Faith then is the overt reaction to the state of being where some important questions are indeed rationally unanswerable. Then again that might not be 'faith' it might just be existential dread.
For me personally, I am very fond of the questions and a life-long contemplation of potential answers. Always remembering the best words of wisdom I ever received.
"When we die, all of our great inquiries are answered but only after we discover we have spent a lifetime asking the wrong questions."