Editing Derek Parfit (section)

===Criticism===

In his book ''On Human Nature'', [[Roger Scruton]] criticised Parfit's use of moral dilemmas such as the [[trolley problem]] and [[lifeboat ethics]] to support his ethical views, writing, "These 'dilemmas' have the useful character of eliminating from the situation just about every morally relevant relationship and reducing the problem to one of arithmetic alone." Scruton believed that many of them are deceptive; for example, he does not believe one must be a consequentialist to believe that it is morally required to pull the switch in the trolley problem, as Parfit assumes. He instead suggests that more complex dilemmas, such as [[Anna Karenina]]'s choice to leave her husband and child for Vronsky, are needed to fully express the differences between opposing ethical theories, and suggests that deontology is free of the problems that (in Scruton's view) beset Parfit's theory.<ref>{{cite book |last=Scruton |first=Roger |author-link=Roger Scruton |title=On Human Nature |publisher=Princeton |edition=1st |date=2017 |pages=79–112 |isbn=978-0-691-18303-9}}</ref>