4 R. Give answer now to this, whether it appears to you possible that at some time hereafter falsity should not be. A. How can that seem possible to me, when the difficulty of discovering truth is so great that it is absurder to say that falsity than that Truth cannot be. R. Do you then think that he who does not live, can perceive and feel? A. It cannot be. R. It results then, that the soul lives ever. A. Thou urgest me too fast into joys: more slowly, I pray. R. But, if former inferences are just, I see no ground of doubt concerning this thing. A. Too fast, I say. Therefore I am easier to persuade that I have made some rash concession, than to become already secure concerning the immortality of the soul. Nevertheless evolve this conclusion, and show how it has resulted. R. You have said that falsity cannot be without sense, and that falsity cannot but be: therefore there is always sense. But no sense without soul: therefore the soul is everlasting. Nor has it power to exercise sense, unless it lives. Therefore the soul always lives.
Source: Soliloquies (New Advent)