The Problem with Apologetics

The Oxford scholar and apologist C. S. Lewis...once closed a lecture to a group of apologists like this: 

I have found that nothing is more dangerous to one’s own faith than the work of an apologist. No doctrine of that faith seems to me so spectral, so unreal as the one that I have just successfully defended in a public debate. For a moment, you see, it has seemed to rest on oneself: as a result when you go away from the debate, it seems no stronger than that weak pillar.