However puzzling this may be, and however many philosophical problems it may raise, one clear look is enough to show its unavoidable truth. There is only this now. It does not come from anywhere; it is not going anywhere. It is not permanent, but it is not impermanent. Though moving, it is always still. When we try to catch it, it seems to run away, and yet it is always here and there is no escape from it. And when we turn round to find the self which knows this moment, we find that it has vanished like the past.
– The Way of Zen, Alan Watts