 In his later years the Austrian philosopher Franz Brentano (1838–1917) became preoccupied with the nature of the continuous (Brentano [PISTC]). In its fundamentals Brentano’s account of the continuous is akin to Aristotle’s. Brentano regards continuity as something given in perception, primordial in nature, rather than a mathematical construction. He held that the idea of the continuous is abstracted from sensible intuition. Brentano suggests that the continuous is brought to appearance by sensible intuition in three phases. First, sensation presents us with objects having parts that coincide. From such objects the concept of boundary is abstracted in turn, and then one grasps that these objects actually contain coincident boundaries. Finally one sees that this is all that is required in order to have grasped the concept of a continuum.