[122] Accordingly [40] he thinks it fit that those who, [41] [42] because of their need of necessary sustenance, have devoted themselves to the service of others, ought not to be compelled to endure any thing unworthy of a liberal freedom of birth; advising those who have the advantage of their ministrations to have a regard to the unexpected misfortunes which have befallen their servants, and to feel respect for their change of condition. And he does not allow those who become debtors for daily loans, and who, by a parabolical and metaphorical expression, have received both the name and unhappy condition of ephemeral animals, or those who through some even still more urgent necessity have become slaves from having been free men, to suffer misery for ever, but he gives them entire deliverance in the seventh year.