Let us temper our criticism with kindness. None of us comes fully equipped.

Carl Sagan

Sagan was a passionate advocate of skeptical inquiry and the scientific method, but argued that critical thinking must go hand-in-hand with kindness. While we may strongly disagree with people who do not share our beliefs, we must not fall into the trap of self-righteousness, because none of us is perfect, and “none of us comes fully equipped.”