“One common strategy on which we should all be able to agree is to take steps to reduce the risk of human extinction when those steps are also highly effective in benefiting existing sentient beings. For example, eliminating or decreasing the consumption of animal products will benefit animals, reduce greenhouse gas emissions, and lessen the chances of a pandemic resulting from a virus evolving among the animals crowded into today’s factory farms, which are an ideal breeding ground for viruses. That therefore looks like a high-priority strategy.” Peter Singer book The Most Good You Can Do Source: The Most Good You Can Do: How Effective Altruism Is Changing Ideas About Living Ethically (2015), Chapter 15: Preventing Human Extinction (p. 177)
“We do not have to make self- sacrifice a necessary element of altruism. We can regard people as altruists because of the kind of interests they have rather than because they are sacrificing their interests.” Peter Singer book The Most Good You Can Do Source: The Most Good You Can Do: How Effective Altruism Is Changing Ideas About Living Ethically (2015), Chapter 9: Altruism and Happiness (p. 103)
“Living a minimally acceptable ethical life involves using a substantial part of our spare resources to make the world a better place. Living a fully ethical life involves doing the most good we can.” Peter Singer book The Most Good You Can Do Preface (p. vii) The Most Good You Can Do: How Effective Altruism Is Changing Ideas About Living Ethically (2015)