Nicene and Post-Nicene Fathers, Ser. II, Vol I:
The Life of Constantine with Orations of Constantine and Eusebius.: Chapter LIX

Chapter LIX.—He gives Glory to God, as the Constant Teacher of Good.

“Abundant thanks, most mighty God, and Lord of all, be rendered to thee, that, by so much as our nature becomes known from the diversified pursuits of man, by so much the more are the precepts of thy divine doctrine confirmed to those whose thoughts are directed aright, and who are sincerely devoted to true virtue. As for those who will not allow themselves to be cured of their error, let them not attribute this to any but themselves. For that remedy which is of sovereign and healing virtue is openly placed within the reach of all. Only let not any one inflict an injury on that religion which experience itself testifies to be pure and undefiled. Henceforward, therefore, let us all enjoy in common the privilege placed within our reach, I mean the blessing of peace, endeavoring to keep our conscience pure from all that is contrary.