The guy in Innocent Faces always struck me and Faust (who is basically Mixed Metaphor's resident theologian and an even more ardent antitheist than me) as someone who believed in believing, but didn't actually believe. When he's looking among the faces at the end:
As the children applauded for the final time that evening, Cherall looked around at all the faces surrounding him, the hundreds of visages floating in the air inside the room, staring down at him and smiling. A single tear rolled down his cheek as he continued to look at them, searching hopelessly for something familiar among all the innocent faces.
He's not looking for his daughter. He
knows his daughter is going to die, and so is his ex-wife. What he's looking for is
faith. In the faces of the children he's looking for the faith that he can no longer feel nor can remember the feeling of. He truly believes that people - children in particular -
should believe, but he's lost a friend and he knows he's about to lose a lot more. He has lost everything,
including his faith in God. I'm pretty sure Cherall is, at this point - or becomes, soon after - a nihilist. His faith has cost him everything and given him nothing. The only reason he doesn't take the final step and renounce his faith publicly is because despite the fact he knows he's lying to them, he can't bare to leave the children who love him in a world as empty as the one he now inhabits.
That's my interpretation, at least. And you can call it pretentious anti-theist propaganda if you want (and I have a feeling a couple of specific people will) but this interpretation actually makes the story even more powerfully resonant with me.