Those of us who also serve by only standing and waiting must respond in just the way that our enemy most despises: by living our lives exactly as we would have done. That means cherishing our freedom; celebrating our secular, free institutions; relishing the pleasures of life as physical beings; respecting the special spark in each individual person — here, in this world, during this life. Our values triumph each time we exercise them. Danny and I watched the attacks of September 11, 2001, together on the TV in our living room. I can say with certainty that—to the extent that so kind a man was capable of understanding such evil — he believed in defying the barbarian by living just as we choose: freely, tolerantly, skeptically, joyfully, laughingly, humanly. After the (most recent) Paris attack, Danny enjoyed watching over and over again this well-known video by Andrew Neil. It expresses very well what he believed, and what our family believes.
I urge reading the whole thing.