Haleivi – I don’t think learning a sefer with him a would be too practical as he’s pretty opposed learning when not in a yeshiva setting. What I did with him yesterday was we watched one of R’ Mizrachi’s lectures on how modern day science proves that the Torah is divine. It was pretty fascinating except for the fact that I had to keep pausing it to explain various ideas to him that he couldn’t understand, say mathematical stuff. But do you think it makes sense to go deeper at this point – like why all other religions are false? Proof of the oral torah? I’m just not sure how far to take this.