Every profession will have its rogues, of course, no matter what oaths are sworn, but many health care professionals have a real commitment to serving the best interests of their clients.

— Peter Singer

Evolution has no moral direction. An evolutionary understanding of human nature can explain the differing intuitions we have when we are faced with an individual rather than with a mass of people, or with people close to us rather than with those far away, but it does not justify those feelings.

— Peter Singer

Extreme poverty is not only a condition of unsatisfied material needs. It is often accompanied by a degrading state of powerlessness.

— Peter Singer

First premise: If we can prevent something bad without sacrificing anything of comparable significance, we ought to do it. Second premise: Extreme poverty is bad. Third premise: There is some extreme poverty we can prevent without sacrificing anything of comparable moral significance. Conclusion: We ought to prevent some extreme poverty.

— Peter Singer

For a merely conscious being, death is the cessation of experiences, in much the same way that birth is the beginning of experiences. Death cannot be contrary to an interest in continued life any more than birth could be in accordance with an interest in commencing life. To this extent, with merely conscious beings, birth and death cancel each other out; whereas with self-aware beings, the fact that one may desire to continue living means that death inflicts a loss for which the birth of another is insufficient compensation.

— Peter Singer

For preference utilitarians, taking the life of a person will normally be worse than taking the life of some other being, because persons are highly future-oriented in their preferences. To kill a person is therefore, normally, to violate not just one but a wide range of the most central and significant preferences a being can have. Very often, it will make nonsense of everything that the victim has been trying to do in the past days, months or even years. In contrast, beings that cannot see themselves as entities with a future do not have any preferences about their own future existence. This is not to deny that such beings might struggle against a situation in which their lives are in danger, as a fish struggles to get free of the barbed hook in its mouth; but this indicates no more than a preference for the cessation of a state of affairs that causes pain or fear. The behavior of a fish on a hook suggests a reason for not killing fish by that method but does not in itself suggest a preference utilitarian reason against killing fish by a method that brings about death instantly, without first causing pain or distress. Struggles against danger and pain do not suggest that fish are capable of preferring their own future existence to non-existence.

— Peter Singer

Google has withdrawn from China, arguing that it is no longer willing to design its search engine to block information that the Chinese government does not wish its citizens to have. In liberal democracies around the world, this decision has generally been greeted with enthusiasm.

— Peter Singer

Hebrew word for "charity" Zedekiah, simply means "justice" and as this suggests, for Jews, giving to the poor is no optional extra but an essential part of living a just life.

— Peter Singer

I agree with Warner and Scrutiny that the more one thinks of one's life as a story that has chapters still to be written, and the more one hopes for achievements yet to come, the more one has to lose by being killed. For this reason, when there is an irreconcilable conflict between the basic survival needs of animals and of normal humans, it is not specialist to give priority to the lives of those with a biographical sense of their life and a stronger orientation towards the future.

— Peter Singer

I can tell you that too much money is corrupting American politics. Don't blame the American public. The U.S. Supreme Court has a lot to answer for, because it has made it impossible for Congress to reduce the corrupting influence of money on American political life.

— Peter Singer