I need give no more references, for they may be found without trouble in any compendium. In the progress of Greek philosophy men were formerly accustomed to follow the order that showed, according to ordinary ideas, an external connection, and which is found in one philosopher having had another as his teacher—this connection is one which might show him to be partly derived from Thales and partly from Pythagoras. But such a connection is in part defective in itself, and in part it is merely external. The one set of philosophic sects, or of philosophers classed together, which is considered as belonging to a system—that which proceeds from Thales—pursues its course in time and mind far separate from the other. But, in truth, no such series ever does exist in this isolation, nor would it do so even though the individuals were consecutive and had been externally connected as teacher and taught, which never is the case; mind follows quite another order. These successive series are interwoven in spirit just as much as in their particular content. We come across Thales first amongst the Ionic people, to whom the Athenians belonged, or from whom the Ionians of Asia Minor, as a whole, derived their origin. The Ionic race appears earlier in Peloponnesus, but seems to have been removed from thence. It is, however, not known what nations belonged to it, for, according to Herodotus (I. 143), the other Ionians, and even the Athenians, laid aside the name. According to Thucydides (I. 2 and 12), the Ionic colonies in Asia Minor and the islands proceeded principally from Athens, because the Athenians, on account of the over-population of Attica, migrated there. We find the greatest activity in Greek life on the coasts of Asia Minor, in the Greek islands, and then towards the west of Magna Græcia; we see amongst these people, through their internal political activity and their intercourse with foreigners, the existence of a diversity and variety in their relations, whereby narrowness of vision is done away with, and the universal rises in its place. These two places, Ionia and Greater Greece, are thus the two localities where this first period in the history of Philosophy plays its part until the time when, that period being ended, Philosophy plants itself in Greece proper, and there makes its home. Those spots were also the seat of early commerce and of an early culture, while Greece itself, so far as these are concerned, followed later.