In his "Groundwork of the Metaphysic of Morals", Kant applied the concept of autonomy also to define the concept of personhood and human dignity. Autonomy, along with rationality, are seen by Kant as the two criteria for a meaningful life. Kant would consider a life lived without these not worth living; it would be a life of value equal to that of a plant or insect. According to Kant autonomy is part of the reason that we hold others morally accountable for their actions. Human actions are morally praise- or blame-worthy in virtue of our autonomy. Non- autonomous beings such as plants or animals are not blameworthy due to their actions being non-autonomous. Kant's position on crime and punishment is influenced by his views on autonomy. Brainwashing or drugging criminals into being law-abiding citizens would be immoral as it would not be respecting their autonomy. Rehabilitation must be sought in a way that respects their autonomy and dignity as human beings.