We must also engage, however, in the more difficult task of understanding the sources of such madness. The essence of this tragedy, it seems to me, derives from a fundamental absence of empathy on the part of the attackers: an inability to imagine, or connect with, the humanity and suffering of others. Such a failure of empathy, such numbness to the pain of a child or the desperation of a parent, is not innate; nor, history tells us, is it unique to a particular culture, religion, or ethnicity. It may find expression in a particular brand of violence, and may be channeled by particular demagogues or fanatics. Most often, though, it grows out of a climate of poverty and ignorance, helplessness and despair.”
Even the terrorists didn't say this. They said why they did it, to get back at the U.S. and kill the infidels. Not because we didn't understand their culture and poverty.