the hardest arithmetic to master is that which enables us to count our blessings.
according to legend, a young man while roaming the desert came across a spring of delicious crystal-clear water. the water was so sweet, he filled his leather canteen so he could bring some back to a tribal elder who had been his teacher.
after a four-day journey he presented the water to the old man who took a deep drink, smiled warmly and thanked his student lavishly for the sweet water. the young man returned to his village with a happy heart.