It is on the "why be moral?" question (which for her may be said to divide into the questions "why be just?", "why be temperate?", etc.) that her doctrine underwent a surprising series of reversals. In "Moral Beliefs", she had argued that the received virtues – courage, temperance, justice, and so on – are typically good for their bearer. They make people stronger, so to speak, and condition to happiness. This holds only typically, since the courage of a soldier, for instance, might happen to be precisely his downfall, yet is in some sense essential: possession of sound arms and legs is good as well. However, damaged legs may happen to exclude someone from conscription that assigns contemporaries to their deaths. So people have reason to act in line with the canons of these virtues and avoid cowardly, gluttonous, and unjust action. Parents and guardians who want the best for children will steer them accordingly.