The cup is always this cup

          At a philosophy class, professor took an empty, clear plastic cups, on the podium in the middle, and asked the audience of students: "What is this?"

          The students replied: "Obviously, this is an empty cup."

          Immediately, the professor filling the milk into the plastic cup, then asked the students: "Now what?"

          The students replied:. "Milk" Professor smiled, drinking milk breath, then went inside, filling a cup of juice, asked the students again: "What about now?"

          The students simply replied, "it's juice."."

          At this time, the professor put away the smile on the face, meaning to say: "in fact, the cup is always this plastic cup. But when it's filled with milk and juice, we often don't see the cup.. Similarly, when our hearts full of stereotypes, money, power and other things, often will lose themselves. People tend to be eager to have more, but often it is hard to own them.