Hume regards the will as an impression which normally is followed by an appropriate bodily movement. It is unclear why he adopts this theory instead of saying that passions are directly followed by actions (a view which would in some respects suit him better). I suggest that he needs impressions of the will to explain our knowledge of our own acts. They thus play an indispensible role in hume's newtonian science of the mind.

The idea of freedom plays a key role in Plato's moral and political thought. In the Republic justice is shown to be beneficial because the just man alone is truly free. There are parallels here with modern discussions of freedom. The Laws argues that to be free a city must avoid the extremes of liberty and of authoritarianism. The legislator should rely on persuasion, not force, so that people willingly obey his laws. The underlying idea is that we are free (...) if we willingly follow the demands of reason rather than being coerced by external forces or by unruly desires. (shrink)

It hardly needs to be said that the parallel between mental and physical health plays an important part in Plato's moral philosophy. One of the central claims of the Republicis that justice is to the soul what health is to the body .1 Similar points are made in other dialogues.2 This analogy between health and sickness on the one hand and virtue and vice on the other is closely connected to the so–called Socratic paradoxes. Throughout his life Plato seems to (...) have clung in some sense to the ideas that justice is our greatest good, that the unjust man is correspondingly miserable and that no one is therefore willingly unjust. It follows from these ideas that the unjust man, like the sick man, is in a wretched state which is not of his own choosing. (shrink)