lógos: 1) rationality; 2) the conscious/rational self; 3) an explainable system of beliefs rooted in notion of one objective reality that we all share and are a part of.

‟The lógos holds always, but humans, always time and again, prove unable to ever understand it, both before hearing it and when they have first heard it.
‟And although the lógos is common, most people live as if they had their own private understanding.
   -- Heraclitus, circa 450 BC

‟In the beginning was the lógos, and the lógos was with God, and the lógos was God. All things happened through it, in it was life, and the life was the Light of all mankind... And the Light shines in the darkness, yet the darkness did not comprehend it.
   -- John 1:1-5