There is an old story about an ancient Greek philosopher named Thales. According to this tale, Thales was looking to the stars as he walked about Athens, attempting to answer certain troubling philosophical questions. He became so engaged in thought that he didn't even notice the well he was approaching. Needless to say, Thales. one of the most brilliant of ancient Greek philosophers. fell into the well and became the butt of many Athenian jokes. His head was so lost in the clouds, some said, that he didn't even notice the world around him.
Wisnewski, J. Jeremy, "A Student's Reflections on Service: What Is Service? Why Serve?" (1998). Evaluation/Reflection. 8.