This collection is a selection of thoughtful, penetrating short essays on applied ethics, written by Peter Singer, Professor of Bioethics at Princeton University, which includes some of his most popular essays and arguments - from the beginning of the third millennium to the middle of 2020.It is neither a “text book” designed to provide some form of tutelage nor a mere collection of “newspaper columns” but an anthology of contemporary essays and arguments. It could be a public platform for large numbers of people to argue and discuss questions of political, social, cultural and humanistic importance.In each essay, Singer addresses some challenging questions and seeks to provide profound yet simple and practical answers. In his writings, he tries to offer ways to live ethically in today's complex world.