Dear Editor:  Who would believe that the numbers 9/11 would be remembered by the world forever?On September 10, 2001 I left on a plane back to Austin after a visit with our daughter in Norfolk, Virginia, teaching at Old Dominion University. Walking into my UT office on 9/11, 2001, the first thing I saw and heard were students and staff wailing and sobbing watching two tiny televisions. The bombing had started. The World Trade Center towers were coming down, next the Pentagon was hit. Then a third plane crashed before it could strike another target. The hijacked planes left from the same ...