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Jonathan Leighton

Find our Sentientist Conversation here on the Sentientism YouTube and here on the Sentientism Podcast.

Jonathan is an ethics strategist, writer, social change advocate and public speaker, He is Executive Director of the Organisation for the Prevention of Intense Suffering (OPIS), a Swiss-based think-and-do tank that promotes the prevention of human and non-human suffering as our overriding global ethical priority. His book, The Battle for Compassion: Ethics in an Apathetic Universe, explores the question “What matters?”. His new book The Tango of Ethics: Intuition, Rationality and the Prevention of Suffering goes further in proposing a rigorous reassessment of how we think about ethics.

Jonathan is non-religious and has a naturalistic worldview. He is vegan and has a sentiocentric moral scope.

JonathanLeighton.org
preventsuffering.org
@jonleighton1

Latest work

Headshot of Michelle St John and Heather Marshall both smiling towards the camera.

Teaching Compassion

Michelle St. John is founder and director of VinE (Veganism in Education). Heather Marshall is a Senior Lecturer and Religious Education PGCE Course Leader at Edge Hill University. A Sentientism conversation about what's real, who matters and how to make a better world.
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Teaching Compassion

Michelle St. John is founder and director of VinE (Veganism in Education). Heather Marshall is a Senior Lecturer and Religious Education PGCE Course Leader at Edge Hill University. A Sentientism conversation about what's real, who matters and how to make a better world.
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Sentientism Meet-Up 25 Oct 2025 (and some other updates)

An invitation to the second ever Sentientism meetup and some updates about our education work and a potential book!
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Giving $500 to 1000 people to do something ‪Drop Dead Generous‬

Tom Cledwyn is co-founder of Drop Dead Generous. A Sentientism Conversation about what's real, who matters and how to make a better world.
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