History of the Peloponnesian War

Indeed through fear of their youth and great numbers, they even perpetrated the following deed: (for at all times most of the Lacedaemonian institutions were framed particularly with a view to the Helots, to guard against them.) They made proclamation, that as many of them as claimed to have done the state most service against the enemy should be picked out, professing that they would give them their liberty; thus applying a test to them, and thinking that those who severally claimed to be first made free, would also, through their high spirit, be most ready to attack them.