Man cries, his tears dry up and run out. So he becomes a devil, reduced to a monster.

Good to evil seems evil

Only very few people can remain unruffled by trouble.

Only Evil in the world is the one inside your mind.

No matter how hard Evil tries, it can never quite match up to the power of Good, because Evil is ultimately self-destructive. Evil may set out to corrupt others, but in the process corrupts itself.

There was the kind of silence there might have been on the day before Creation.
Adam stood smiling at the two of them, a small figure perfectly poised exactly between Heaven and Hell.
Crowley grabbed Aziraphale's arm. "You know what happened?" he hissed excitedly. "He was left alone! He grew up human! He's not Evil Incarnate or Good Incarnate, he's just...a human incarnate-