Summary

• Our new book, All the Lives You Can Change: Effective Altruism for Christians, will be published April 28 2026
• The book introduces effective altruism–style thinking to a Christian audience, framing effectiveness, cause prioritization, and evidence-based action as expressions of loving God and loving one’s neighbor (Matt. 22:37–39)
• Authored by @dominicroser, @DavidZhang and me (JD).
• You can best support this project by pre-ordering a copy or free intro here

Praise for All the Lives You Can Change

“Effective altruism asks us to extend our empathy beyond our immediate circle to include distant strangers and future generations. All the Lives You Can Change argues powerfully that this ‘radical empathy’ is at the very core of the Christian faith. Inspiring, intellectually rigorous, and deeply practical, this is an essential guide for Christians who want to ensure their compassion translates into the greatest possible impact for the world’s most vulnerable people. It’s a beautiful, moving book.”

— @William_MacAskill, author of What We Owe the Future and Doing Good Better

“I couldn’t put this book down. It manages to be both inspiring and practical. It blends cutting-edge research with careful theological discussion. . . . Essential reading for Christians who are trying to figure out how to steward their resources wisely.”

— Lara Buchak, professor of philosophy, Princeton University

“Jesus tells us that the two most important commandments are to love God and love our neighbor; everything else is commentary. And who is our neighbor? It’s the entire human family. To me, this has always meant that the call of my faith as a Catholic is to do as much as I can to improve the lot of the ‘least of these’ whom Jesus talks about in Matthew 25. All the Lives You Can Change is an engaging road map for how to do precisely that; it should be mandatory reading for Christian clergy and for every Christian who wants to live their faith to the fullest.”

— Bruce Friedrich, founder and president, The Good Food Institute

You can best support this project by pre-ordering a copy here

Longer Summary

by JD Bauman

All the Lives You Can Change starts from a simple claim: effective altruism—the use of evidence and reasoning to find the best ways to do good—is not cold, callous, or un-Christlike. Rather, it is often a necessary tool for loving one’s neighbor well in a globalized world. 

The book’s core contribution is translation. We take familiar EA ideas—impartial moral concern, cause prioritization, cost-effectiveness, attention to scale and trade-offs—and articulate them in a Christian moral and theological vocabulary. Loving one’s neighbor “as oneself” (Mark 12:31) plausibly requires asking what would actually help them most. In practice, this often means grappling seriously with statistics, opportunity costs, and scale (“love thy statistic”), without denying the equal and individual value of each life (Luke 12:6–7).

At the same time, the book does not treat EA ideas as axiomatic. We explicitly test them against core elements of the Christian worldview, including Scripture as a source of moral direction, prayer as a practice for discernment and guidance, and the belief in a loving God who is at work in history and will one day make all things new. The aim is not to dilute EA-style reasoning, but to examine how it sits alongside—and is sometimes challenged by—distinctively Christian commitments.

 We think we are unusually well-positioned to attempt this translation and testing of EA, drawing on several years of Christian EA community-building through Effective Altruism for Christians.

About the book

We see All the Lives You Can Change as a close cousin to Doing Good Better, but written for a Christians highly motivated to do good, but underexposed to tools that help turn intentions into impact. 

Table of Contents (Overview)

Introduction: The Impact-Driven Life
Why good intentions are not enough, and why outcomes matter (“by their fruits you will recognize them,” Matt. 7:16)

1. Who Is My Neighbor? Practicing Radical Empathy
Expanding moral concern across distance, difference, species, and time (Luke 10:25–37)

2. Giving More Versus Giving Better
Why some ways of helping are far more effective than others

3. People Are Equal, Causes Are Not
Cause prioritization and the ITN (Importance, Tractability, Neglectedness) framework

4. With All Your Mind
Reason, evidence, data, and humility as instruments of love (Mark 12:30)

5. Running the Race
Psychological and moral obstacles to doing the most good (Heb. 12:1)

6. The Literal Talent
The power of financial giving and common questions about consumption and ethics (Matt. 25:14–30)

7. For Such a Time as This
Careers, calling, and long-term impact (Esth. 4:14)

8. Prophets and Kings
Influence, advocacy, politics, and evangelism

Conclusion: The Time That Is Given Us
Next steps toward an impact-driven life 

Why This Might Be Relevant to the (Secular) EA Community

Many EA Forum readers will already be familiar with the core ideas in this book. 

The value I hope to add is threefold:

1. Points of dialogue and points of correction for the EA movement.
   We engage directly with areas where Christian ethics and effective altruism diverge or sit uneasily together, including partiality, evangelism, vocation, moral uncertainty, and non-utilitarian moral constraints. An extended appendix addresses recurring tensions—especially evangelism and appeals to infinite utility. Just as Christians have much to learn from effective altruism, the EA movement can also learn from healthy Christian communities. We explore both directions in detail.
2. Moral motivation and sustaining practices.
   Even if your credence in theism is low, you might learn from Christian practices—such as prayer, worship, faith in God's grace and hope for the world— that function as mechanisms for sustaining long-term, impact-oriented engagement (e.g. mitigating burnout, despair, or self-reproach).
3. Outreach and movement-building.
   The book is a sustained case study in approaching EA-style reasoning from a broadly non-EA religious community. For EAs interested in outreach, university organizing, or engaging religious friends and institutions, this may be useful both practically and conceptually.

We’d especially welcome EA feedback on where we’ve represented EA ideas well, where we’ve missed important nuances, and where the framing could be improved.

You can best support this project by pre-ordering a copy or free introduction here