Be wary the optimist

Never trust an optimist.

You see, a cynic will simply fail to take action. A realist will only do as much as they think will have real impact. But an optimist has tied his identity to the positive, in being right, and will be willing to commit terrible acts to make it so. The only way they can go is down.

An optimist lives in desperation and makes his home on death ground. He will stop short of nothing to keep it.