Thanks to all of you so warmly sharing your advice and experiences, my "last visit" with my brother went extremely well-- much better than I expected. You really helped!
Most of you suggested that I let my brother set the tone and the pace of our discussions and that is what I wanted to do. Unfortunately, that's not quite possible with my brother because one of his brain mets is pressing against the languge center in his brain-- both speech and writing. So although he can understand everything you say, he can only respond with a "Yes" or "No" or sometimes a single word. So he can't initiate any discussions. However, I did gently bring up the 2 or 3 things I specifically wanted to talk about and by playing "20 Questions" he was able to communicate to me what he wanted to communicate. I was surprised that he didn't dive away from the emotional or spiritual discussions and he was unusually patient with the "20 Questions" approach (usually he throws up his hands in frustration after 30 seconds, but this time he stuck with it), so I think he really did want to make his wishes known about these topics. I am probably the only one in the world who would be able to have even this limited degree of communication with him, so I am very glad that I took this time to visit and converse.
But overall, the visit was not heavy or emotional. Most of the time we just hung out while we watched TV or I chattered on about family gossip or current events. One day I took him to visit some of his best friends and we sat around drinking beer and talking about sailing. My brother got a little drunk (don't worry, alcohol won't hurt him) and I played a CD of his favorite Irish band in the car on the ride back to the nursing home and he was having a ball. Another day I sent away his dinner tray and went out and got a pizza and we sat in his room eating pizza and watching eposides of his favorite old TV program on a DVD I brought him.
Casagrayson recommended the book "Final Gifts". I highly recommend this book to everyone.Since I don't have a Kindle, I was not able to download and read the book instantly. However, I did read several excerpts of the book on the Internet and a couple of interviews with the author so I got the general idea of what the book was suggesting. One of the things I did because of this reading was to tell my brother that it was OK for him to let go.
I told him how much I appreciated his amazing fight to "beat the beast" for so many months. The extra 6 months he got allowed the family to come to terms emotionally with the diagnosis. It also allowed him to work with us to settle his affairs and now everything is taken care of which, as his executor, is a load off my mind. I thanked him again for giving us the opportunity to make as smooth a transition as possible. And I told him that he should know that we are all going to be OK in the future and he should allow himself let go when his time comes. He seemed somewhat relieved on hearing that.
I don't know if this will really be my "last visit" or not. Nobody knows, of course, when the end will come and it may just happen that I do get to see him again. But I feel very good about taking this time to have a warm, relaxed visit focused just on him and to address some of the deep topics that we wouldn't ordinarily address. There are no loose ends or regrets about things left unsaid. Thank you all again for supporting me through this.