π§΅ 4/5
My own feeling is that Parfit's systematic point-of-view-of- the-universe approach is a bad way to think about value and lives worth living and has consequently not been an entirely benign influence on our thinking about ethics.
"Reasons and Persons" was published in 1984, but I would choose the 1985 "Ethics and the Limits of Philosophy" as a key work to read when thinking in general terms about how one should live.
https://www.hup.harvard.edu/books/9780674268586
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