For over a decade, Peter Singer has been one of those public intellectuals we are supposed by some not to have. In the past, however, the problem with him has been that his thinking has often been about matters not seen to concern the public at large, animal liberation, for example. But events have hurried us all forward. Even a few years ago it was possible for mottoes like ‘greed is good’ or pronouncements like Mrs Thatcher’s that ‘there is no such thing as society, there are only individuals’ to seem not only provocative but hard-headed. The good life, we were, many of us, persuaded, was synonymous with goods, our heroes were experts in money-making – having and spending, ethics seemed to be a matter of preserving the appearances, not getting caught.