 The second, ‘positive’ conception of liberty is not quite so easy to define. Roughly speaking, a person or group is free in the positive sense to the extent that they exercise self-control or self-mastery. It is not agreed, however, what exactly constitutes this self-mastery in the relevant sense. According to one influential account, to be free in the positive sense is to be able to act on one’s second-order desires (Frankfurt 1982). For example, the addicted gambler may be free in the negative sense not to gamble—since no one actually forces him to do so—, but he is not free in the positive sense unless he actually succeeds in acting on his presumed second-order desire not to desire gambling. Berlin associates this second conception especially with such continental philosophers as Spinoza, Rousseau, and Hegel. Although it found some support among English Hegelians like T. H. Green, those who advocate the positive conception of liberty have generally been in the minority, particularly among contemporary Anglo-American philosophers.