The pessimist looks down and hits his head. The optimist looks up and loses his footing. The realist looks forward and adjusts his path accordingly.
Where the pessimist sees danger hiding behind every back, the optimist sees friendship. Which is why, when we encounter coincidence, we often see conspiracy.
We have powerful tools: openness, optimism, and the spirit of curiosity. All they have is secrecy and fear. And fear is the great destroyer.[to Rios]