PHILOSOPHY is a concern not limited to the specialist; for, as strange as it may seem, there is probably no human being who doesn't philosophize. Or at least every man has moments in his life in which he becomes a philosopher. This is particularly true of our natural scientists, historians, and artists. Sooner or later, all of them concern themselves with philosophy. Of course, I"m not saying that this is of great service to mankind; the books of philosophizing laymen — be they famous physicists, poets or politicians — are usually bad. Too often they present an immature, naive, and mostly false philosophy. But that is secondary here. The important thing is that we all philosophize and, so it seems, must philosophize. Therefore, the question, what philosophy really is, is important for everyone. Unfortunately, this is one of the most difficult philosophical questions. I know of only a few words which have so many meanings as the word philosophy. Just a few weeks ago, I participated in a colloquium of leading European and American thinkers in France. They all spoke about philosophy, but understood entirely different things by this word. We want to examine more closely the various interpretations and then attempt to find a way to comprehension in this veritable swarm of definitions and views.