Even when we seek revenge, it is important to make one thing clear – the life of one yeshiva boy is worth more than the lives of 1,000 Arabs. The Talmud states that if gentiles rob Israel of silver, they will pay it back in gold, and all that is taken will be paid back in folds, but in cases like these, there is nothing to pay back, since as I said – the life of one yeshiva boy is worth more than the lives of 1,000 Arabs.
Mordechai Eliyahu (Chief Rabbi of Israel) quoted in “Rabbi Eliyahu: Life of one yeshiva boy worth more than 1,000 Arabs”, Ynetnews, 2008