- All knowledge is of sensible things.
- The good is known.
- Therefore the knowable good is a sensible thing.
- But the sensible good is pleasure.
- Therefore, the knowable good is pleasure.
- Thus we would see that the only known good would be the pleasant.
- Consequently, it would be irrational hold something else to be good.
- Thus, there would be no reasonable basis to be virtuous, unless virtue enabled one to live more pleasantly.