 Consciousness, Brentano argues, always forms a unity. While we can perceive a number of physical phenomena at one and the same time, we can only perceive one mental phenomenon at a specific point in time. When we seem to have more than one mental act at a time, like when we are listening to a melody while tasting a sip of red wine and enjoying the beautiful view from the window, all these mental phenomena melt into one, they become moments or, to stick with Brentano’s terminology, divisives of a collective. If one of the divisives ends in the course of time, e.g., when I swallow the wine and turn my eyes to the fireplace, but continue to listen to the music, the collective goes on to exist. Brentano’s views on the unity of consciousness entail that inner observation, as explained above, is strictly impossible, for this would require us to have two distinct acts in the very same moment. Of course it is possible to remember another mental act one had a moment ago, or expect future mental acts, but due to the unity of consciousness one cannot have two distinct mental acts, one of which being directed towards the other, at the same time.