Our mind is like a pot that is turned upside down. When we were born, the pot came first with the neck upright. The whole purpose of life is to stand up, turn the pot upside down and empty it. But the pot is filled with something very sticky; though it is standing upside down, it doesn’t get empty. No animal has its neck upright. Only human beings have the opportunity to empty their heads. Becoming hollow and empty is the whole purpose of life.