After all , as the australian-born philosopher and ethicist peter singer points out , if there is one question more interesting than what motivates those billionaires who give their fortunes to philanthropy , it is what motivates those who do not .
Insofar as the " collective want " thesis is not the problem of the free rider , it is simply an ethical attack on individual valuations , and a desire by the economist ( stepping into the role of an ethicist ) to substitute his valuations for those of other individuals in deciding the latter 's actions .
They are used to resolving conflicting principles , says dick willems , a dutch doctor and ethicist .
荷兰的医生,伦理学家dickwillems说,他们惯于解决相冲突的原则。
The opportunity to clone a barrel-chested , long-faced primitive man , one excited university ethicist told a reporter , would be a little like rescuing an endangered pocket of exotic wildlife .
Philosopher and ethicist dr robert sparrow , of monash university , australia , doesn 't believe lab meat will reduce our over-consumption of " real " meat .
The eminent university of chicago ethicist leon kass has argued that human cloning would be offensive in part because the clone would " not be fully a surprise to the world . "