Book · 2009
Justice: What's the Right Thing to Do?
by Michael J. Sandel
Harvard's most-watched ethics course distilled into a book: trolley problems, Rawls, and Aristotle as tools for thinking through real political choices.
What does Reddit think of Justice: What's the Right Thing to Do??
The book surfaces alongside Sandel's free Harvard lecture series, and commenters treat them as interchangeable entry points: start with the lectures, grab the book if you want something to underline. Nobody in the data argues about Sandel's conclusions or pushes back on his communitarianism. What r/askphilosophy actually endorses is the pedagogical design — the use of trolley problems and consent puzzles to force hard choices rather than dissolve them. One ↑14 comment names it alongside courses in ethics and applied ethics. Eight mentions over seven years is modest; this is a book the sub recommends without debating.
Community feedback & reader fit
Themes
- · applied ethics and moral philosophy
- · political philosophy and justice
- · trolley problems and moral dilemmas
- · consent and the badness of harm
- · communitarianism vs. liberalism
- · philosophy as pedagogy
Common praise
- + r/askphilosophy recommends it as a starting point for ethics without hedging or suggesting prerequisites.
- + The lecture series companion makes the book's arguments easier to revisit after watching Sandel work through them live.
- + Commenters cite it for teaching readers how to sit with a hard moral choice instead of engineering their way out of it.
- + A ↑13 comment calls the Justice lecture series a great introduction to applied ethics and political philosophy, with the book as the natural follow-on.
Common criticism
- − Eight mentions across seven years in a single subreddit suggests the book doesn't generate sustained argument — readers finish it and move on.
- − No commenter in the data engages with Sandel's actual conclusions, which may mean the book works better as an introduction than as a position worth contesting.
- − The sentiment scores flat-line at zero across every quote, implying r/askphilosophy treats Justice as a tool rather than a text.
Who it's for
You've been arguing with someone about trolley problems or consent or what governments owe their citizens and you want the actual philosophical vocabulary for those arguments — this is the book. If you've already read Rawls or Nozick, Sandel won't surprise you. The r/askphilosophy data is clear: 7 different commenters point here as a first move, not a deepening one. People who finished an intro ethics course and want something that bridges theory and current political debate tend to find it useful. Anyone who has watched the Harvard lectures online and wants a text to work through in parallel will recognize every chapter.
Mentions over time
Top subreddits
Which Reddit comments matter for Justice: What's the Right Thing to Do??
Top-upvoted quotes across the subreddits where this book is mentioned. Click through to read the full thread.
“But what if the townspeople still riot because they don't believe your flimsy pretenses? The point of the example is to create a situation where there is a hard choice in order to think through the hard choice. Your response is just to say "what if there is no hard choice". That's kind of besides th…
“Your question seems to focus on one specific aspect of homicide: **consent**. And that's reasonable. People rarely consent to be killed. Therefore it's an almost universal assumption to assume **lack of consent** to be killed, and said lack of consent is one component of **the badness of homicide**…
“It sounds like you have a fair amount of questions about lots of interesting things. One thing studying philosophy can do is help to get clearer on what the options are, the reasoning behind the options, and how to approach problems with the appropriate degree of humility and curiosity. And my guess…
“It sounds like you want to ask those questions to your friend, because that's not, like, a popular view of morality in philosophy, which sounds like some kind of moral subjectivism. If you're interested in reasons why we ought to not to enslave people, or why we ought to help others, then this is …
“Michael Sandel's Justice lecture series is a great introduction to ethics / applied ethics / political philosophy.
“Well getting overwhelmed seems entirely appropriate. Try to work through it and the feeling of being overwhelmed will lessen as you acquire knowledge and confidence. As far as where to start? You need two things. One is you need to practice honest introspection, which is easier said than done since…
Convinced? Pick up Justice: What's the Right Thing to Do?
What else does r/askphilosophy read?
Other books mentioned in the same sub, ranked. Shared-sub overlap with this title breaks ties.
Critique of Pure Reason
Immanuel Kant
Kant's 1781 attempt to settle the limits of human knowledge — the book that split philosophy in two and still hasn't been fully digested.
The Myth of Sisyphus
Albert Camus
A 1942 essay that opens with the question of whether life is worth living and ends by insisting Sisyphus is happy.
Tractatus Logico-Philosophicus
Ludwig Wittgenstein
Wittgenstein built a numbered ladder from logical atomism to the inexpressible, then said the ladder had to be discarded once you climbed it.
Being and Time
Martin Heidegger
Heidegger's argument that human existence only gets its meaning from death — 162 Reddit mentions, mostly from people explaining why it's so hard to read.
Nicomachean Ethics
Aristotle
Aristotle's 2,400-year-old argument that living well depends on virtue, leisure, and the company you keep — still the canonical text for the field.
Beyond Good and Evil
Friedrich Nietzsche
Nietzsche dismantles the moral framework Western civilization built on, then refuses to tell you what to replace it with.
Justice: What's the Right Thing to Do? — frequently asked
What does Reddit think of Justice: What's the Right Thing to Do?+
Nobody debates Sandel's arguments — they just point to the book and the free Harvard lecture series as equivalent entry points. The ↑14 comment that names it places it in a short list of resources for studying ethics broadly construed.
Is Justice: What's the Right Thing to Do a good introduction to philosophy?+
Yes, for ethics specifically. r/askphilosophy recommends it to readers asking about moral philosophy, applied ethics, and political philosophy — sometimes alongside the free Harvard lectures. The ↑13 comment calls the Justice course a great introduction to ethics and applied ethics. It won't cover epistemology or metaphysics, but for the questions the title asks, the sub treats it as a safe first move.
Should I read Justice by Sandel or just watch the Harvard lectures?+
Depends on how you learn. r/askphilosophy treats them as interchangeable — a ↑14 comment says there's a book associated with the class you can pick up to read things alongside the lectures. If you want something to underline and annotate, get the book. If you want to see Sandel work through trolley problems with students in real time, start with the lectures. The data doesn't suggest one is clearly superior.
Is Justice: What's the Right Thing to Do worth reading in 2026?+
Probably, if you're new to political philosophy. The 8 Reddit mentions span 2020 to 2025, with 2 in 2025 alone, so the book still circulates in r/askphilosophy recommendations. The caveat: experienced readers of Rawls, Nozick, or Aristotle won't find new arguments here. The value is pedagogical — the book is designed to make hard choices feel hard rather than resolve them cleanly.