And we the people are so vunerable. Our bodies are shot with mortality. Our legs are fear and our arms are time. These chill humors seep through our capillaries, weighting each cell with an icy dab of nonbeing, and that dab grows and swells and sucks the cell dry. That is why physical courage is so important – it fills, as it were, the holes – and why it is so invigorating. The least brave act, chance taken and passage won makes you feel loud as a child. 

From Pilgrim at Tinker Creek

By Annie Dillard