Full Idea
Man has calculation, but there is also the divine logos. But human logos is sprung from the divine logos, and it brings to each man his means of life, and his maintenance.
Gist of Idea
Human logos is an aspect of divine logos, and is sufficient for successful living
Source
Epicharmus (comedies (frags) [c.470 BCE], B57), quoted by (who?) - where?
Book Reference
'Ancilla to the Pre-Socratic Philosophers', ed/tr. Freeman,Kathleen [Harvard 1957], p.39