What percentage of your income should you donate to charities? Which charities are most worthwhile? Peter Singer, a Princeton professor, argues that people should give away one-third of their income to worthy charities. But, when entertainment mogul David Geffen donated $100 million to renovate a New York concert hall, Singer said that he could not understand “how anyone could think that giving to the renovation of a concert hall that could impact the lives of generally well-off people living in Manhattan and well-off tourists that come to New York could be the best thing that you could do with $100 million.” He added that a donation of less than $100 million could restore sight to someone who is blind. To what theory of ethics is Professor Singer subscribing? Do you agree with him? What obligation do you have to help others? What is the best way to help others?