Time, as a separate entity, has not yet been defined in language. Definitions will be found to be merely explanations of the sense in which

we use the word in matters of practical life. No human being can tell how long a minute is; only that it is longer than a second and shorter than an

hour. In some sense we can think of a longer or shorter period of time, but this is merely comparative. The difference between 50 and 75 steps a

minute in marching is clear to us, but note that we introduce motion and space before we can get a conception of time as a succession of events,

but time, in itself, remains elusive.