
a book
Reasons and Persons
Derek Parfit · 1986 · 560 pages
Part 1 discusses ways in which theories about morality and rationality can be self-defeating and Part 2 the relations between what a single person can rationally want or do at different times, and what different people can rationally want or do. Parts 3 & 4 tackle personal identity and our obligations to future generations.
recommended by 6 people
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Sam Harris
“I also recommend Derek Parfit’s book, “Reasons and Persons,” which is just brilliant and written as though by an alien intelligence. It’s a deeply strange book filled with thought experiments that bend your intuitions left and right.It’s just a truly strange and unique document and incredibly insightful about morality and questions of identity and well worth reading if you are of a philosophical cast of mind.”↗

Will MacAskill
“One of the most important books written in the 20th century.”↗

Peter Singer
“Parfit’s penetrating thought and spare prose make this one of the most exciting, if challenging, works by a contemporary philosopher.”↗



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