T. S. Eliot Four Quartets

Thomas Stearns Eliot was a poet, dramatist and literary critic. He received the Nobel Prize in Literature in 1948 "for his outstanding, pioneer contribution to present-day poetry." He wrote the poems The Love Song of J. Alfred Prufrock, The Waste Land, The Hollow Men, Ash Wednesday, and Four Quartets; the plays Murder in the Cathedral and The Cocktail Party; and the essay Tradition and the Individual Talent. Eliot was born an American, moved to the United Kingdom in 1914 (at the age of 25), and became a British subject in 1927 at the age of 39.

See also http://en.wikipedia.org/wiki/T.S._Eliot

“Time present and time pastAre both perhaps present in time future,And time future contained in time past.If all time is eternally presentAll time is unredeemable.What might have been is an abstractionRemaining a perpetual possibilityOnly in a world of speculation.What might have been and what has beenPoint to one end, which is always present.Footfalls echo in the memoryDown the passage which we did not takeTowards the door we never openedInto the rose-garden. My words echoThus, in your mind.But to what purposeDisturbing the dust on a bowl of rose-leavesI do not know.Other echoesInhabit the garden. Shall we follow?”<...>Go, said the bird, for the leaves were full of children,Hidden excitedly, containing laughter.Go, go, go, said the bird: human kindCannot bear very much reality.Time past and time futureWhat might have been and what has beenPoint to one end, which is always present.”