History of the Peloponnesian War

For the foundation consisteth of stones of all sorts, and those in some places unwrought and as they were brought to the place. Many pillars also taken from sepulchres and polished stones were piled together among the rest. For the circuit of the city was set every way farther out, and therefore hastening they took alike whatsoever came next to hand.

Themistocles likewise persuaded them to build up the rest of Piraeus, for it was begun in the year that himself was archon of Athens, as conceiving the place both beautiful, in that it had three natural havens, and that being now seamen, it would very much conduce to the enlargement of their power.

For he was indeed the first man that dared tell them that they ought to take upon them the command of the sea, and withal presently helped them in the obtaining it.

By his counsel also it was that they built the wall of that breadth about Piraeus which is now to be seen. For two carts carrying stones met and passed upon it one by another. And yet within it there was neither rubbish nor mortar [to fill it up], but it was made all of great stones cut square and bound together with iron and lead. But for height it was raised but to the half, at the most, of what he had intended.