 When someone utters in a sentence “something that is black” and “something that is light”, respectively, two different sorts of things can be meant by those expressions: (1) the meant object is closed to further possible determination; (2) the meant object is open to further possible determination. If “something that is black” is used in the open way, we think of the object as something that can have other properties besides blackness; it may be identical with the object that is meant by “something that is light”. If we use the expressions “something that is black” and “something that is light” in the closed way, the objects meant by these expressions are necessarily distinct. In general, we speak about real, existent things, which as completely determined objects have infinitely many determinations. As our mind can only grasp a finite number of aspects, we usually intend the objects as open (1910, §45). Nevertheless a question remains: That an object appears closed or open to us, is due to our intending (meaning). But what makes an open attitude open?