It is always becoming past. And we have the sensation, therefore, of our lives as something that is constantly flowing away from us. We are constantly losing time. And so we have a sense of urgency. Time is not to wasted. Time is money. And so because of the tyranny of this thing, we feel that we have a past, and we know who we are in terms of our past. Nobody can ever tell you who they are, they can only tell you who they were. And we think we also have a future. And that is terribly important, because we have a naive hope that the future is somehow going to supply what we are looking for.

Alan Watts.