This enormous tragedy has shaken us to the core and has surely awakened even the most lethargic among us. “Im lo achshav, aimassai?” (If not now, when?) The Bartenura comments on this Mishna that one who neglects to do mitzvos during his lifetime will accomplish nothing after his death. And should one fail to take advantage of one’s younger years to right the wrongs, he may find himself lacking the strength or favorable circumstance in his advanced age. A sobering lesson, indeed, for us all to take to heart.