Could you expand on this?
Only by repeating the same thought in more words, but the original quote from Lewis does that.
See, my problem with the Lewis quote is that it consists largely of a set of bare, unsupported assertions. Now, being unsupported doesn't mean they aren't true, but it does mean that they're not very convincing. Speaking as someone who really is neutral/undecided on this topic, the quote doesn't sway me one way or the other. So if, as you say, the only possible way you could expand on this claim is by "repeating [it] in more words", I don't find your position very well-supported.
Another month, another rationality quotes thread. The rules are: