I think, as I did before you stripped out a few of the quotations, that all this shows is that some eminent Christians (or pre-Christian authors regarded as authoritative by many Christians) had some badly broken ideas about curiosity. That's not terribly surprising. But it doesn't give much support for your claim that using reason to gain converts is as unappealing and dangerous to Christians as using "marketing" to gain converts is to rationalists. Most Christians now don't feel any particular obligation to agree with everything said by Spurgeon or Aquinas. Many Christians now don't feel any particular obligation to agree with everything allegedly said by Paul or Moses.

You have a good point. I still believe that reason is dangerous to Christianity. If I wanted to make a good argument, I would summarize the responses of the Catholic church to the upstart Enlightenment during roughly 1500-1800. I'm not going to do that. I had this list of quotes handy.

Modern Christianity has accommodated itself to reason; but it had to, and it damaged Christianity. Church attendance figures since 1900 (do not prove, but) support this view.