The willful departure from that one optimum path intended for us by nature and it's Creator is a symptom of a diseased mind, period.

The angry rejection of reasonable efforts to alert one to straying off, and the critical importance of turning back, is the manifestation of a nastily infantile mind.

People engage in evil thinking all the time. Sometimes willful, sometimes unavoidable, sometimes even legitimate.

I'd say I'm as straight as they come, but if anyone mentions terms related to homosexuality I have the greatest trouble preventing myself from conjuring the imagery. Sometimes I do it for the purpose of examining the issue.

All people have "dark thoughts". Morbid curiosity, confusion, accosting, a desire to understand the enemy...take everyone, to some extent, into those recesses of imagination.

The trick is to earnestly avoid dwelling on any of that and to furiously reject the attitude of "Pfff, it's really not all that bad."