Two men walked along a stream, but stopped when they came across a pond. One man stopped, picked up an axe, and said, “I have found an axe made from a tree.” The other said “Do not say ‘I’. ‘We’ found an axe.” A few moments later, the owner of the axe tore across a nearby bridge. “We must run!” said the man who had picked up the axe. The second man replied, “On second thought, keep to saying ‘I’.”