Diogenes of Sinope | Tertullian, Against Marcion Chapter 1

<blockquote>For the cynic Diogenes used to go about, lantern in hand, at mid-day to find a man; whereas Marcion has quenched the light of his faith, and so lost the God whom he had found.

Source. Translated by Peter Holmes. From Ante-Nicene Fathers, Vol. 3. Edited by Alexander Roberts, James Donaldson, and A. Cleveland Coxe. (Buffalo, NY: Christian Literature Publishing Co., 1885.) </blockquote>