PLS Seminar IV 2009

From Anselm's Proslogion Chapter 3:

Not only does this something than which no greater can be conceived exist, but it exists in so true a sense that it cannot even be conceived not to exist. For it is possible to form the conception of an object whose non-existence shall be inconceivable; and such an object is of necessity greater than any object whose existence is conceivable: wherefore if that than which no greater can be conceived can be conceived not to exist; it follows that that than which no greater can be conceived is not that than which no greater can be conceived [for there can be thought a greater than it, namely, an object whose non-existence shall be inconceivable]; and this brings us to a contradiction. And thus it is proved that that thing than which no greater can be conceived exists in so true a sense, that it cannot even be conceived not to exist: and this thing art Thou, O Lord our God! And so Thou, O Lord my God, existest in so true a sense that Thou canst not even be conceived not to exist.

I figure this will probably get brought up.