1) The law of unintended consequences. 2) The law/point of diminishing returns. 3) The fact that when you subsidize something, you generally tend to get more of it. 4) Nuance/complexity/vicissitudes. 5) Compromise. 6) The "double-edged sword". 7) Pragmatism. 8) Open-mindedness. 9) The fact that we don't have political enemies but political opponents. 10) Cognitive dissonance. 11) Doubt. 12) Dialectical thinking. 13) Humility. 14) The fact that hyperbole (Bush is Hitler, Obama is Hitler, etc.)/"true believing" can often be destructive. 15) Perspective-taking. 16) The need to NOT take oneself so seriously. 17) Self-deprecation. 18) The fact that unfettered spinning tends to make a person look moronic. 19) Contingency awareness/the limitations of human knowledge/multi-causality. 20) Friendships based upon things other than politics. 21) Impartiality (the fact that "your person" doesn't always win the debate)/the need to sometimes give credit where credit is due. 22) "Devil's Advocacy". 23) The keeping of one's "powder" dry/the need to sometimes "pick your battles" and/or know when to "fold". 24) Civility. 25) Respectfulness. 26) An awareness that you can sometimes learn from those who you disagree with. 27) Moral consistency/"a spade is a spade". 28) The fact that the good isn't always the enemy of the perfect. 29) Differentiating fact from opinion.