The broadside against religion launched by a new breed of evangelical atheists has generated much heat but little light. Locked in battle against their Christian opponents the argument goes nowhere fast, and in an age of extremism, nurtures the dangerous vice of intolerance.

Mark Vernon was an Anglican priest, left a conviction atheist, but now finds himself to be a committed and increasingly passionate agnostic. Part personal story, part philosophical search, After Atheism argues that the contemporary lust for certainty is demeaning of our humanity.

The key to wisdom - as Socrates, the great theologians and the best scientists know - is understanding the limits of our knowledge.