Heraclitus : Surviving "Fragments" of his Works

Below is a link to Heraclitus' Fragments which are full of startling wisdom.  Most significantly for Christology, Heraclitus was the great exponent of the Logos, quite before later thinkers such as Plato and the Stoics reflected on It, and many centuries before John's Gospel sang,
"In the beginning was the Logos,
and the Logos was with God,
and the Logos was God..."

http://community.middlebury.edu/~harris/Philosophy/heraclitus.pdf