What is cowardice?
"Imagine for a moment you're sitting at your kitchen table making bombs. Knowing that should you sweat too much, or make a sudden move, you will be terribly maimed or killed. Then, later, weaving through the happy crowd: seeing the faces of smiling children. Knowing that if you succeed in your terrible mission, your name will be cursed by millions; and when you are eventually killed (the brothers Tsarnaev may not have been suicide bombers exactly, but they must have known their chances of survival were slim), only then will you discover if the holy men were right about the next life..."