[Serious] Christians what would change your mind?

[Belacqua]

I don't know what the Christians in your family think, but serious thinkers have never described God in the way you're imagining.

I sort of disagree with this. From my reading, some of the people you listed did believe in the kind of God that came down to earth in flesh and interacted with people in human/"superhuman" ways. But perhaps I've been mistaken about them. I'm thinking Augustine and Aquinas specifically. Did they not believe in the Incarnation in a literal sense?

You're right, of course, that nearly every Christian does hold to a literal incarnation, personal interaction, etc. 

But I don't think that this is a service that's provided on demand. "I'll believe it when my demands are met," is not considered to be sufficiently open-minded. There has to be proactive work on our end, humility, seeking-out. 

In particular, I'm thinking of serious Christians like Isaac Newton, who would scoff at the idea of a God who is up there taking orders from the counter. Newton felt that there is more than enough reason to believe in God without expecting that any one of us will be given a private showing.