Peter Singer is one of the world's most widely read and controversial philosophers. He is famous for his active defense of animal rights, based on the idea that animals should not be made to suffer in order to provide food or service to humans. He is also a relentless utilitarian, arguing that income inequality should be fixed by having wealthier people give money to charities that benefit the poor until the point where the wealthy start to cut into the essentials that they need to live. He's got fascinating views on many things, as you will see! For more on Peter, see his website .