121. VI. ’It is as sure a means of taking a man’s life to give him a silk cord that one knows certainly he will make use of freely to strangle himself, as to plant a few dagger thrusts in his body. One desires his death not less when one makes use of the first way, than when one employs the second: it even seems as though one desires it with a more malicious intention, since one tends to leave to him the whole trouble and the whole blame of his destruction.’
[194] Those who write treatises on Duties (De Officiis) as, for instance, Cicero, St. Ambrose, Grotius, Opalenius, Sharrok, Rachelius, Pufendorf, as well as the Casuists, teach that there are cases where one is not obliged to return to its owner a thing deposited: for example, one will not give back a dagger when one knows that he who has deposited it is about to stab someone. Let us pretend that I have in my hands the fatal draught that Meleager’s mother will make use of to kill him; the magic javelin that Cephalus will unwittingly employ to kill his Procris; the horses of Theseus that will tear to pieces Hippolytus, his son: these things are demanded back from me, and I am right in refusing them, knowing the use that will be made of them. But how will it be if a competent judge orders me to restore them, when I cannot prove to him what I know of the evil consequences that restitution will have, Apollo perchance having given to me, as to Cassandra, the gift of prophecy under the condition that I shall not be believed? I should then be compelled to make restitution, having no alternative other than my own destruction: thus I cannot escape from contributing towards the evil. Another comparison: Jupiter promises Semele, the Sun Phaeton, Cupid Psyche to grant whatever favour the other shall ask. They swear by the Styx,