Evolutionary theory holds that our ability to sense when we should be suspicious has been every bit as essential for human survival as our capacity for trust and cooperation.
Our passions, when well exercised, have wisdom; they guide our thinking, our values, our survival.
Threats to our standing in the eyes of others are remarkably potent biologically, almost as powerful as those to our very survival.
Fear, in evolution, has a special prominence: perhaps more than any other emotion it is crucial for survival.
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