Hell is paved with good intentions.

Hell is paved with good intentions, not bad ones

Most of the evil in this world is done by people with good intentions.

Your intentions will be good. Without consideration and forethought, however, your actions could still be evil. That is the problem, of course, evil is always easy and resisting it is never so. Evil is relentless; and anyone, if they tire, if they are not vigilant, can fall prey to it.

And good intentions? These scared him the most: people with good intentions tended not to question themselves. And people who didn't question themselves, in the scientific world and beyond, were the ones to watch out for.

Half of the results of a good intentions are evil; half the results of an evil intention are good.