 According to the theory of the correlatives, the nature of a being is something defined by its activity. Therefore, being and activity are inseparable and identified (esse and agere). Consequently, according to the theory of the correlatives, the nature of a being is defined based on (a) its activity, that which makes it active and allows it to execute different intrinsic and extrinsic actions; (b) its passion, that which affects the being either intrinsically by itself or extrinsically by another; and (c) its action, that which makes it being in act and being in constant movement. This structure, which will receive diverse formulations throughout his work, namely matter/form/conjunction, beginning/middle/end, or doer/done/means (Gayá 2008; Bonner 2007), is presented in the book Liber de ascensu et descensu intellectus as follows: every being has a natural virtue, which can be “active”, “passive”, and “connective”. These virtues are the correlatives that Llull linguistically distinguishes using suffixes. For the active nature he uses -tivus (e.g., bonificativus), for the passive, -bilis (bonificabilis), and for the connective, -are (bonificare).