Time has certain properties: (1) divided in past, present, and future, (2) is extended and measurable. When i now go out and look what has these properties. I cannot find anything extra-mental that corresponds to them. So time must be something in the mind, something subjective. Augustine is a presentist: past and future do not exist (outside the soul), only the present exists. The future does not yet exist, the past does not exist anymore. Time is strictly speaking a distention of the mind (or impression in the mind). But what about the meta- physical makeup of the world that makes that we have such an impression (e. g. , motion). A. : that is not time, because it doesn"t have the two essential properties of time. (but maybe we can call some aspects of the exter- nal world time, because it is responsible for time in us. ) Criticism of other (physical) approaches to time (1)