Full Idea
The Stoics believed the faculty in man which enables him to think, to plan and to speak - which they called 'logos' - is literally embodied in the universe at large.
Gist of Idea
Stoics believed that rational capacity in man (logos) is embodied in the universe
Source
report of Stoic school (fragments/reports [c.200 BCE]) by A.A. Long - Hellenistic Philosophy 4 Intro
A Reaction
This is the stage where logos becomes something dramatically more grand than the logos found in Plato's 'Theaetetus' (but see Heraclitus). It is what is meant by St John's 'In the beginning was the logos' (which is straightforward stoicism).
Book Reference
Long,A.A.: 'Hellenistic Philosophy' [Duckworth 1986], p.108