In Greece, philosophy becomes prominent when the heroic struggle to acquire the conditions of existence has been followed by its enjoyment, when the unquestioning acceptance of life has yielded to reflection. The fact that their authors, the sages of Greece, were generally active as legislators, is to be explained in the same way as that the one among them whose maxim contains the whole problem of philosophy. According to the doctrine content of the splendour, one shall call the first Greek philosophers, physiologers pure and simple, and understand thereby, in agreement with Aristotle, those who considered the riddle of existence solved when the original material had been stated, out of the modifications of which all things consist. This chapter reviews as follows: the pure physiologers of Greek, such as, thales, and anaximander; pure metapbysicians of Greek, such as, the pythagoreans, and eleatics; and metaphysical physiologers of Greek, such as heraclitus, and empedocles.