Two Monks and a Scorpion

Two monks were washing their bowls in the river when they
noticed a scorpion that was drowning. One monk immediately
scooped it up and set it upon the bank. In the process he was
stung. He went back to washing his bowl and again the scorpion
fell in. The monk saved the scorpion and was again stung. The
other monk asked him, "Friend, why do you continue to save the
scorpion when you know its nature is to sting?"

"Because," the monk replied, "to save it is my nature."