I am sorry, but I have ready Part 4 of Ohr Hashem (Rav Hasdai Crescas) to which you referred to in your answer on the possibility of extraterrestrial life and I fail to find Chapter 5 in this part... It looks like Ohr Hashem, Part 4, has only 4 chapters? Could you please perhaps show me the exact quote? I will be very thank ful if you could.

You are correct that a typographical error fell in the source which I quoted, and it should read: Rav Hasdai Crescas (Or Hashem 4, 2). We usually don't have the time to "provide library services", but it sounds like it's very important to you, and as an apology for my misquote which apparently cost you time, I'll be happy to send you the print-screen of those pages to the email which you attached (if it doesn't arrive, please resend your email accurately. All the best! Rav Ari Shvat (Chwat)