1. Notion and history. History of philosophy and philosophy are, inseparable, and for ethics history is essential in another sense also. Philosophy, as a deliberate study, takes place within man’s history. But it is· not the interest of all men. All need a more or less explicit view of the world, but this need not be philosophical. It may be a religious orientation. But men at all times, whether they give themselves to philosophy or not, have to live, that is, they have to give their lives a meanin…