Crassus (2.3-2.4)

The greatest part of this, if one must tell the scandalous truth, he got together out of fire and war, making the public calamities his greatest source of revenue. For when Sulla took the city and sold the property of those whom he had put to death, considering it and calling it spoil of war, and wishing to defile with his crime as many and as influential men as he could, Crassus was never tired of accepting or of buying it.[*]

And besides this, observing how natural and familiar at Rome were such fatalities as the conflagration and collapse of buildings, owing to their being too massive and close together, he proceeded to buy slaves who were architects and builders. Then, when he had over five hundred of these, he would buy houses that were afire, and houses which adjoined those that were afire, and these their owners would let go at a trifling price owing to their fear and uncertainty. In this way the largest part of Rome came into his possession.