From Aristotle’s Athenian Constitution:
As soon as he was at the head of affairs, Solon liberated the people once and for all, by prohibiting all loans on the security of the debtor’s person: and in addition he made laws by which he cancelled all debts, public and private. This measure is commonly called the Seisachtheia [= removal of burdens], since thereby the people had their loads removed from them. … It so happened that, when he was about to enact the Seisachtheia, he communicated his intention to some members of the upper class, whereupon,… these persons borrowed money and bought up a large amount of land, and so when, a short time afterwards, all debts were cancelled, they became wealthy; and this, they say, was the origin of the families which were afterwards looked on as having been wealthy from primeval times.