[43] Epistle 122. The inhuman sports exhibited at Rome may justly be considered too as an effect of the people’s contempt for slaves, and was also a great cause of the general inhumanity of their princes and rulers. Who can read the accounts of the amphitheatrical entertainments without horror? Or who is surprised that the emperors should treat that people in the same way the people treated their inferiors? One’s humanity on that occasion is apt to renew the barbarous wish of Caligula, that the people had but one neck. A man could almost be pleased by a single blow to put an end to such a race of monsters. “You may thank God,” says the author above cited (Epistle 7), addressing himself to the Roman people, “that you have a master (viz., the mild and merciful Nero) who is incapable of learning cruelty from your example.” This was spoken in the beginning of his reign; but he fitted them very well afterwards, and no doubt was considerably improved by the sight of the barbarous objects to which he had from his infancy been accustomed. [44] We may here observe that if domestic slavery really increased populousness, it would be an exception to the general rule, that the happiness of any society and its populousness are necessary attendants. A master, from humour or interest, may make his slaves very unhappy, and yet be careful, from interest, to increase their number. Their marriage is not a matter of choice with them, no more than any other action of their life. [45] Ten thousand slaves in a day have been often sold for the use of the Romans at Delus in Cilicia.—Strabo, lib. 14.