This man became very animated while discussing his ideas on...

This man became very animated while discussing his ideas on happiness. He extended the index finger of each hand, and brought them very close together, as pictured: “Babies are happy with this much,” he said. “All they need is one ounce of milk.” Then he started to slowly widen the space between his fingers, until they were very far apart: “Adults,” he said, “are not even happy with this much.”

He pulled his fingers close together again: “You only need this to be happy,” he said.

Then he pulled them far apart again: “You do not need this.”