In ‘Is prostitution harmful?’ I argue that if casual sex is acceptable, then so is prostitution.1 Anna Westin, in ‘The harms of prostitution: critiquing Moen's argument of no-harm’, raises four objections to my view.2 Let me reply to these in turn.

Westin's first objection is that it is ‘fundamentally problematic [to] categorise sexual ethics into merely two types’, the type that accepts casual sex and the type that does not. The reason why, she explains, is that this ‘incompletely frames the contemporary discourse in sexual ethics’. She points to the views of Linda McDowell, Roger Scruton, Raja Halwani and the Roman Catholic Church to illustrate the breadth of contemporary ethical theorising about sex.

Westin is right that I do not provide an account of contemporary sexual ethics. Neither …