Those kinds of self-limiting questions are the same familiar ones that can stop any of us from doing scary things. We are being courageous. My hope is to get us talking about fear and courage, and about how much courage it takes to solve social and environmental problems, locally and globally.
Courage is as hard to define as any virtue.
Courage may be the ultimate virtue because it comes into play when any of the other virtues are being tested. For instance, charity is a virtue, but we need courage to take that virtue to its highest expression. We usually know what courage looks like when we see it, but the person we judge as courageous may not agree. Courage is a quality we readily admire in others, but often disregard in ourselves. Ultimately, courage is a personal quest, involving the testing of our own values against our own fears.