Listen to the video of Mark and answer the following questions. What is Mark's first lecture at Harvard? And can you remember your first lecture at CMU? What is his best memory at Harvard? What is the culture of entrepreneurship of United States? Before building Facebook, what did Mark do concerning Internet? How many times JK Rowling was rejected before Harry Potter's publishing? Where is the greatest success come from from Mark's point of view? What seems to be the problem of the people as well as the world today? Why did Mark and his wife want to promote equal opportunity? How to create a sense of purpose for everyone? What is the struggle of our times?