 Things themselves – things that fall into one of the categories—are not in our soul, only their accounts (rationes) are (DOS 448–49). These modes or accounts (modi rerum sive rationes) are abstracted from things and compared to each other as if they were the things themselves being compared (DOS 451). It is the mode or account of things that makes it possible for us to reason about them (faciunt res rationalibes: DOS 450; rationes rerum et modi per quos res sunt rationabiles: DOS 463). Logic then considers the modi sive rationes rerum, the properties of things in so far as they are thought or compared to one another, which enables combining them into propositions and demonstrations and arriving at scientific knowledge (scientia). (See DOS 449) Without the consideration of things together with the rationes rerum—for example, that ‘divisible’ is more universal than ‘line’—no reasoning could be done about them (DOS 450).