IT is difficult to say what the philosophy of religion is. One might define it as 'philosophizing about religion'. But people disagree about the nature of philosophy and religion, so this definition has its drawbacks. Philosophy of religion is now a very flourishing branch of philosophy. Thirty years or so ago, specialists in philosophy of religion were a rare breed. But they are now very common, and they publish a lot. Many of them would describe themselves as philosophers of religion. Yet it.would be rash to conclude from this that we can easily define 'the philosophy of religion'. It is not, for example, a discipline distinguishable from others as chemistry is from needlework .