Were these his only writings, he would have remained a respected but minor figure.^[1]^. 1  _Against the Academics_. 386 A.D. (Contra academicos) 2  On Providence. 386 A.D. (De ordine) 3  On the Blessed Life. 386 A.D. (De beata vita) 4  Soliloquies. 386/387 A.D. (Soliloquia)
The evidence strongly suggests that 1,100 or more people in or above the impact zones survived the initial crashes, roughly 300 in the south tower and 800 in the north. Many of those lived until their building collapsed.
Clark was one of only four people in the South Tower to escape from a floor above the plane's impact, escaping from his office on the 84th floor. No one escaped above the impact point in the North Tower. Clark's testimony before the 9/11 Commission, where he detailed problems with the 911 emergency call system, has been widely quoted.