“Mensch” comes from the Yiddish word mentsh, meaning "a good person" (per Wikipedia, as of a while ago). A Mensch in this sense is an all-around admirable human being--compassionate, wise, trustworthy, sane.
This is not the sense in which I urge you to “Be a Mensch.”
“Mensch,” on the other hand, comes from the German word Mensch, meaning “human being.” A Mensch in this sense shares a sufficient percentage of DNA with you and me that, if fertile, it could mate with another Mensch and create yet another Mensch. It’s a bit of a lower bar than the other. This is the sense in which I urge you to “Be a Mensch.”
That’s not to say I am encouraging you to mate and have children; that’s another discussion. I’m just saying: Be a human being.
Now this may seem like a strange thing for me to say, given that in all likelihood, you are already a human being. But I have my reasons.
First, I promised you that swallowing the pills would be easy. Well, if you don’t find this an easy pill to swallow, I’d have to accuse you of being difficult. I mean, really: With Beautify the World, as you may recall, you succeed just by trying. With Be a Mensch, you succeed without even trying. How much easier can I make this? So by giving you a pill that you will succeed at without even trying, I accomplish two things: First, I fulfill my promise to make this way easier than the 12 steps. Second, I give you a success upon which you can build. Which is a beautiful thing.
But there's a deeper reason I include this pill. Deep down, a lot of us wish we were something other than human. I, for example, want to be a tree. I think I would be a much better person if I were a tree. Trees, for example, are majestic. I am not majestic. I'm not even 6' 1". So yeah: I'd be totally down with being a tree. But guess what. It's not happening. I'm a human. So I might as well be a Mensch. Same goes for you. You can save yourself and everyone else a lot of hassle if you just don't try to be something you ain't. Be a Mensch.