I love reading the Qs and As on this site, and a recent post recommended a book

I love reading the Qs and As on this site, and a recent post recommended a book

I love reading the Qs and As on this site, and a recent post recommended a book "The Elements of Moral Philosophy" by Rachels. I got the book from my local library and really enjoyed it. What would be a good follow-up book on these topics? I have a hard time slogging through the original basic philosophy works, so I really value a book like this that is serious but not too technical for a layperson. Thanks.

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