It is said that in order to learn, the first step is to empty ourselves of our preconceived notions. One can not fill a cup which is already full. The hollow insides of the bamboo reminds us that we are often too full of ourselves and our own conclusions; we have no space for anything else. In order to receive knowledge and wisdom from both nature and people, we have to be open to that which is new and different. When you empty your mind of your prejudices and pride and fear, you become open to the possibilities.