8 There are, besides, other counsels of the ungodly, i.e., of those who have fallen into heresy, unrestrained by the laws of either the New Testament or the Old. Their reasoning ever takes the course of a vicious circle; without grasp or foothold to stay them they tread their interminable round of endless indecision. Their ungodliness consists in measuring God, not by His own revelation, but by a standard of their choosing; they forget that it is as godless to make a God as to deny Him; if you ask them what effect these opinions have on their faith and hope, they are perplexed and confused, they wander from the point and wilfully avoid the real issue of the debate. Happy is the man then who has not walked in this kind of counsel of the ungodly, nay, who has not even entertained the wish to walk therein, for it is a sin even to think for a moment of things that are ungodly.
Source: Homilies on the Psalms (New Advent)