I've started reading Rumours Of Another World, by Philip Yancey. Here's an interesting early paragraph:
'No society in history has attempted to live without a belief in the sacred, not until the modern West. Such a leap has consequences that we are only beginning to recognize. We now live in a state of confusion about the big questions that have always engaged the human race, questions of meaning, purpose, and morality. A sceptical friend of mine used to ask himself the question, "What would an atheist do?" in deliberate mockery of the What Would Jesus Do (WWJD) slogan. He finally stopped asking because he found no reliable answers.'