 Williams elucidates a notion of “agent-regret,” a sentiment whose “constitutive thought” is a subject’s first-person thought that it would have been much better had she done otherwise. Agent regret also requires a certain sort of expression that is different from that of what we might call “bystander regret.” For example, it might include the willingness to compensate a person who was harmed by one’s actions. In the case of a lorry driver who, through no fault of his own, runs over a child, Williams writes, “we feel sorry for the driver, but that sentiment co-exists with, indeed presupposes, that there is something special about his relation to this happening, something which cannot merely be eliminated by the consideration that it was not his fault” (1981, 43).