Page "Peter Singer" Paragraph 57

An alternative line taken by Singer about the need for ethics is that living the ethical life may be, on the whole, more satisfying than seeking only material gain.

He invokes the hedonistic paradox, noting that those who pursue material gain seldom find the happiness they seek.

Having a broader purpose in life may lead to more long-term happiness.

On this account, impartial ( self-sacrificing ) behavior in particular matters may be motivated by self-interested considerations from a broader perspective.