One day a sage was walking along a road, and he saw a man planting a carob tree. The sage asked the man, “How long does it take for this tree to bear fruit?” The man replied, “Seventy years.” The sage responded, “Are you certain that you will live another seventy years?” The man replied: “I found grown carob trees in the world; as my forefathers planted those for me, I too plant these for my children.”

– A Talmud Story