It is second-hand, but it to the Greek historian Diogenes Laertius (circa 300 AD), we owe the text of the last will and testament of Plato, who had lived and died six hundred years earlier.

Plato (424 BC-348 BC) was an eminent Greek philosopher, perhaps the greatest, or certainly on a par with his student, Socrates, and his contemporary, Aristotle.

Because of a misjudgment in his support for a local politician, Plato endured life as a slave for a few years.

When he died in Athens at the age of 80, his will was discovered.

According to Laertius, this is the text:

"These things hath Plato left and bequeathed.

"The farm of Hephaestiades bounded.... it is forbidden to sell or alienate it but it shall belong to my son Adimantes who shall enjoy the sole proprietorship thereof.

"I give him likewise the farm of Hereusiades, situated ... it is the one I acquired by purchase.

"Further, I give to my son Adimantes, three mines in cash, a silver vase weighing one hundred and sixty-five drachmae, a cup of the same metal weighing sixty-five, a ring and pendant in gold weighing together four drachmae, with three mines due to me from Euclid the gem engraver.

"I free from slavery, Diana. But for Tychon, Bietas, Dionysius, and Apolloniades, I will they continue the slaves of my son Adimantes, to whom I bequeath also all my chattels as specified in an inventory held and possessed by Demetrius.

"I have no debts. AND I appoint as executors and administrators of these bequests Speusippus, Demetrius, Hegias, Eurymedon, Callimachus, and Thrasippus."