Though our mind cannot be seen or measured physically, it actually does exist and the sizes of people's minds are different. People say in this way: "You have a mind that is broad like an ocean," or "Your mind is as narrow as a large-eyed herring." The size of our mind is the result of how we have formed our mind while we grow and mature. Then, what should we do to make our mind broad like an ocean? Our mind can be broadened infinitely to the extent that we resemble the heart of God who has existed from before the ages and created all things and controls human lives.