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# Zeno of Citium

## Basic idea

Founder of Stoicism (\~334-262 BCE), taught at the Stoa Poikile in Athens. Established the school's logic, physics, and ethics framework after a shipwreck redirected him to philosophy.

## Key tenets

* Virtue is sufficient for happiness; externals (wealth, health) are indifferent.
* Logic, physics, ethics form a single integrated system.
* Live according to nature (i.e., according to reason).