This inexplicable phenomenon has been on my mind lately. What is it exactly - past, present, future? Why does our experience of it vary and how does it move through, around, behind and beyond us all at once? How does it seem to get away from us when we are occupied with living? Does it move faster at certain points in our life, slower at others? It's maddening and fascinating and I think I must stop thinking about it or else do something about all this thinking - before the time escapes me.
"... time is not a linear flow, as we think it is, into past, present, and future. Time is an indivisible whole, a great pool in which all events are eternally embodied and still have their meaningful flash of supernormal or extra-sensory perception, and glimpse of something that happened long ago in our linear time."
- Frank Waters Mountain Dialogues, 1981

Time present and time past
Are both perhaps present in time future,
And time future contained in time past.
If all time is eternally present
All time is unredeemable.
What might have been is an abstraction
Remaining a perpetual possibility
Only in a world of speculation.
What might have been and what has been
Point to one end, which is always present.
Footfalls echo in the memory
Down the passage which we did not take
Towards the door we never opened
Into the rose-garden.
T.S. Eliot - excerpt from Burnt Norton No. 1 of " Four Quartets"