Philosophy

Practical Ethics: 8 key ideas

by Peter Singer

The core ideas of Practical Ethics, each in under a minute, written in our own words. Want the full depth? Get the book.

1. IDEA 1 OF 8

   Ethics must give equal consideration

   Singer argues that the basic principle of ethics is equal consideration of interests.

   When we act, we should give the same weight to the similar interests of everyone affected, whoever they are.

2. IDEA 2 OF 8

   Singer's ethics weighs preferences

   Singer defends a form of preference utilitarianism, which aims to satisfy the preferences of all those affected by an action.

   He uses it to examine difficult moral issues. Outcomes matter most.

3. IDEA 3 OF 8

   Equality applies across groups

   Singer applies equal consideration to issues of race and gender.

   He argues that discrimination ignores the interests of people based on irrelevant characteristics. Fair treatment requires looking at interests, not labels.

4. IDEA 4 OF 8

   Animals have interests too

   Singer argues that animals can suffer, so their interests deserve consideration.

   He criticises practices that cause them unnecessary suffering. Their pain counts in moral reasoning, just as human pain does.

5. IDEA 5 OF 8

   Taking life raises hard questions

   Singer discusses abortion, euthanasia and the value of life.

   His positions on these topics are controversial, and he argues that the wrongness of killing depends on a being's capacities. His views drew protest.

6. IDEA 6 OF 8

   The rich should help the poor

   Singer argues that people in rich countries have strong obligations to help those in extreme poverty.

   He believes giving much more is a moral duty, not just charity. Distance does not reduce duty.

7. IDEA 7 OF 8

   The environment matters

   Singer argues that ethics should consider future generations and the natural environment.

   Protecting nature is part of acting ethically. Nature and future generations both deserve moral concern in our choices today.

8. IDEA 8 OF 8

   Means and ends must be weighed

   Singer discusses whether breaking laws can be justified to prevent harm.

   He argues that the consequences of actions matter most. He weighs results carefully, asking when protest or law-breaking is justified.