The Greeks used three kinds of columns in their buildings. The Doric column was the simplest; it had no base and tapered very slightly up to the capital which consisted of a thick slab of stone. The Doric was the type most often used by the Greeks, and in its simplicity and perfection of form it symbolized the finest Greek spirit. The Ionic column stood on a base; it was more slender than the Doric, and the capital consisted of two very graceful spirals. The Ionic was a lighter type of column than the Doric and was used a great deal by the Greeks in Asia Minor. A third type was introduced later, called the Corinthian. The capitals of this column were richly carved in the form of leaves, but the Greeks never liked it as much as the simpler and more graceful types, and it was not very much used until Roman times. All the columns were fluted. The Greeks never used ornament for the sake of ornament. The column was used as a support and ornament was felt to be entirely out of place on it, but the decoration on the capital served a purpose. As the eye followed the fluting upwards to where {278} the vertical line met the horizontal, the simple decoration of the capital served to make the transition from one line to the other less abrupt. In Greek architecture no part of a building that bore any strain was ornamented, and wherever ornament was used it was always in harmony with the general purposes of the building. These were the main characteristics of Greek temples. Hie greatest Athenian temples were on the Acropolis, the ancient citadel of Athens, which had been transformed by Pericles into a dwelling-place for Athena. II. THE ACROPOLIS IN THE TIME OF PERICLES The fittest place for a temple or altar was some site visible from afar, and untrodden by foot of man, since it was a glad thing for the worshipper to lift up his eyes afar off and offer up his prayer. Socrates.[1] The Acropolis was approached by a flight of steps leading to the Propylaea or Entrance Porch. Six great Doric columns stood at the entrance, and opening out to right and left of the main hall were other porticoes, the walls of which were decorated with paintings showing the deeds of ancient heroes. The roof was of white marble, and standing at this entrance one could catch a glimpse of the sea in the distance. Tradition held that it was on this spot that Aegeus stood to watch for the ship that should being back Theseus, and that it was from {279} this high rock that he cast himself down in despair when he saw the ship returning with black sails, a sign, as he thought, that his son was dead.