“Of all the arguments against voluntary euthanasia, the most influential is the 'slippery slope': once we allow doctors to kill patients, we will not be able to limit the killing to those who want to die.”

Australian philosopher and bioethicist, Singer is best known for his utilitarian approach to ethics and his influential work on animal rights and effective altruism. His writings challenge conventional moral frameworks, advocating for compassionate decision-making across human and nonhuman animals.