One-heart unity means to make unity with one heart. Everyone wants to achieve this. Any government, nation, organization, and whoever wants to carry out a system or plan cannot do it without mind and body unity. One-heart unity is absolutely necessary in the process of striving toward goals in our life, whether in daily life, in the course of one year, throughout our whole lives, or even in the entire course of history. An individual cannot fulfill a goal if he or she has changes mind from evening to morning, like two persons! Then let's think about our society and our environment. Do they have one-heart unity? We know they do not.

You may feel your mind changing many times in the course of a day. Because your mind varies, your direction also varies, and because your direction varies, your purpose varies too. You cannot fulfill one purpose when your mind varies. It is not simple to fulfill a goal with one mind; how much more difficult it is to fulfill it with two! Thus one mind is necessary. We must have one mind in the morning, during the daytime and in the evening; and the same in youth, middle age and old age. If one starts something with one mind, opens up the process with one mind, and prepares the result over a long period with one mind, then the purpose of that person is greater. We should have one mind. When we pursue a certain purpose, we need one mind. Without one mind we cannot fulfill the goal. When we look at the world, we can realize that God created this world with one mind, not with two minds. In order to fulfill one goal, we have to begin with one mind and pass through the process in one direction. However, today, people are not able to have one mind.