On 9/11/2003, two years after the destruction of the twin towers, I wrote a letter that was published in the NY Times:
To the Editor:
With the loss of the World Trade Center, we collectively underwent an amputation. What remains is a collective phantom limb.
Much as a severed limb leaves behind an incontrovertible feeling that it is still part of the body, the twin towers continue to be a part of us.