As in human beings, the good life in cats depends on their virtues. Aristotle pointed out that someone lacking in courage cannot flourish no matter what other virtues they may possess: whatever they do will come to nothing. Similarly, a cat that is always fearful cannot live well. Whether in the wild or in human settlements, a cat’s life is dangerous. Courage is as much a feline virtue as it is a human one. Without it, neither cats nor humans can thrive.