As they sailed from island to island and on to the mainland, the Greeks came to realize that some of these places would make suitable homes, and by degrees they began to colonize them; that is to say, parties of settlers went from their mother-cities to found new homes overseas. Pioneers, adventurous explorers, had always gone out first and brought back reports of the new land. A suitable site required a good water supply, and fertile land where corn could be grown, and the vine and the olive cultivated. The settlers needed timber from which they could build their ships, and of course a good harbour was necessary. They also hoped to find friendly natives who would help them in their farm-work and who would in no way oppose them or interfere with their plans. The natives must have looked with eyes of wonder upon the newly arrived Greeks. Most of them had never seen men of this kind before. The only foreign traders they knew were the Phoenicians, and they came only to trade, to exploit the people and to exhaust the resources of the place in order to gain gold. They knew only these "greedy merchant men with countless gauds in black ships."[[1]] But these newcomers were different. A Greek poet has described this Greek adventure over the sea, and the wonder of those who received the strangers:
A flash of the foam, a flash of the foam,
A wave on the oarblade welling,
And out they passed to the heart of the blue:
A chariot shell that the wild waves drew.
Is it for passion of gold they come,
Or pride to make great their dwelling?[[2]]
All kinds of considerations took the Greeks over the sea to found new homes for themselves: some of them were discontented with their government and wanted to go where they could establish a new one; owing to the increasing population their home-cities became over crowded which created difficulties in the supply of food, and many thought a new land would give them greater and better opportunities; others found that the trade of the colonies was a source of wealth; and others went just for the love of adventure. Whenever a body of men decided to sail away and found a colony, they first consulted the Oracle at Delphi as to whether they would be successful, and whether Apollo approved of the place they had chosen and would bless their enterprise. They then chose a leader, whose name was always held in honour and handed down as the founder of the colony. On leaving the mother-city, the colonists went in procession to the Town Hall and there they received fire from the sacred hearth, which they took with them, and from which they kindled the fire on their own sacred hearth in their new home.
These colonies were quite independent of the mother-city as far as government was concerned, but the colonists looked back to the home from which their race had sprung with great affection; wherever they went they were still Greeks, they spoke the Greek language and they worshipped the Greek gods.
Colonies were founded not only in the islands of the Aegean, but along the coasts of the Black Sea, which the Greeks called the Euxine. These latter colonies, of which Byzantium (the ancient name for Constantinople) was the greatest, became very important to the Greeks, for they supplied them with grain which grew abundantly on the northern shores, and with iron from the Hittite land in the South-East.
The greatest of all the colonies in the East were the Ionian colonies, those in the eastern part of the Aegean and on the coast of Asia Minor. The Greeks who colonized them were descended from the Ionian tribes who had settled in Greece, and so this whole region became known as Ionia. Herodotus tells us that the "Ionians had the fortune to build their cities in the most favourable position for climate and seasons of any men whom we know." Miletus was the greatest of the Ionian cities, and it developed a very rich civilization some time before the great days of Athens.
Great thinkers came out of Ionia. Thales, one of the Seven Wise Men of Greece, the philosopher and man of science, studied the heavens, and he foretold an eclipse of the sun in a certain year, which came to pass. The Babylonians before him had made similar studies, but he carried on their work and made greater advances. He questioned in his mind what his discoveries might mean, and for the first time in the world he declared that the movements of the sun and moon and stars were determined by laws, and that the eclipse of the sun was due to certain movements of the heavenly bodies, and had nothing to do with the anger of the Sun-God. This was the first step in the freeing of men's minds from superstition, and though man had a long way to go and many things to learn before he could take the second step, it was Thales of Miletus and other Ionian philosophers in the sixth century B.C. who first set men to thinking about the real meaning of the things they saw about them in the world of nature. What we to-day call science was born in Ionia more than two thousand years ago. Many wise sayings of Thales have been preserved. It was he who said: "God is the most ancient of all things, for He has no birth: the world is the most beautiful of all things, for it is the work of God: ... time is the wisest of all things, for it finds out everything."[[3]]
Another wise man of science who lived in Miletus was Anaximander. He was one of the earliest mapmakers, and he and Hecataeus, who wrote a Geography as a "text to Anaximander's map," were amongst the first thinkers who developed the science of Geography.
