II.2 chapter 2

So evil, as we already stated, is not something of a different source standing opposite to God. It can be understood easily because being is the nature of God (as the words 'I am: that I am' ('ego sum, qui sum') mean). God has most being, but everything that is made has a grade of being (some more, some less) given to them by God: therefore nothing stands opposite to God (nothing except something what would not be: so nothing).