Astral Codex Ten publishes long-form essays on AI safety, rationality, politics, science and culture, alongside reader-written book reviews and weekly open threads. Readers get argumentative, carefully reasoned analysis plus community news such as meetups, surveys and grant-related projects.

A newsletter of short meditations on mortality, attention and living deliberately, drawing on Stoic and other philosophical and religious writers such as Seneca, Epictetus, Simone Weil and Marcus Aurelius. It includes book chapters, a weekly Seneca letter series with practices, and podcast versions, with some content for members only.

Poems, short essays and reflections from poet David Whyte, often prefaced by notes on how each piece came to be written. Issues also include announcements for his live events and material from his Three Sundays Series.

Weekly Spanish-language essays that use historical figures and ideas to explore learning, long-term thinking and how we understand the world. Each issue accompanies a podcast and tells a story before unpacking a concept such as pace layers, causal reasoning or deliberate practice.