To the Stoics, more like Heraclitus than Anaxagoras, order in the cosmos comes from an entity called logos, the cosmic reason. But as in Anaxagoras this cosmic reason, like human reason but higher, is connected to the reason of individual humans. The Stoics however, did not invoke incorporeal causation, but attempted to explain physics and human thinking in terms of matter and forces. As in Aristotelianism, they explained the interpretation of sense data requiring the mind to be stamped or formed with ideas, and that people have shared conceptions that help them make sense of things ("koine ennoia"). "Nous" for them is soul "somehow disposed" ("pôs echon"), the soul being somehow disposed "pneuma", which is fire or air or a mixture. As in Plato, they treated "nous" as the ruling part of the soul.