History of the Peloponnesian War
Thucydides
Thucydides. The English works of Thomas Hobbes of Malmesbury. Hobbes, Thomas. translator. London: John Bohn, 1843.
Thus the Athenians quickly raised their walls, the structure itself making manifest the haste used in the building.
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.