Logos means word, speech, reason and ratio. Heraclitus spoke of a Logos common to all, which most do not understand. The Stoics made it the divine reason pervading the universe; Philo of Alexandria joined it to Jewish thought; and the Gospel of John declared that the Logos was with God, was God, and became flesh.
Logos
Word, reason, account: the rational principle of the cosmos, and in Christian thought the divine Word made flesh.
Also: the Word