We say that time passes, time goes by, and time flows. Those are metaphors. We also think of time as a medium in which we exist.

We have a habit of turning to scientists when we want factual answers and artists when we want entertainment, but where are the facts about the nature of the self? Neurologists peering at PET scans and fMRIs know they aren't seeing the soul in there.

It's fair to say that Wikipedia has spent far more time considering the philosophical ramifications of categorization than Aristotle and Kant ever did.

James Gleick Quotes