Any human being has the body and the mind. When humans die, the body and the mind disappear, and they can neither perceive nor express things. Both

 consciousness and unconsciousness disappear when the mind disappears. The fact that we exist in reality means that we are alive. Being alive enables us to

 read this article, eat, sleep, study, work and do activities. Everyone including a new-born baby and an old man facing impending death is alive. Any living

 person has the body and the mind. Any living mind consists of consciousness and unconsciousness, and perceives, expresses, and remembers.

No one is without thoughts. Thoughts represent the mind. The mind consists of consciousness and unconsciousness, and what one feels and thinks is his or her

 mind. It is only that person who feels his or her thoughts and feelings. He or she cannot know what the other party thinks and feels. He or she can only guess

 the other's thoughts and feelings by perceiving the expressions of the other's speeches, actions, and facial expressions. Every one has and feels their own

 memories and thoughts. It has nothing to do with others' thoughts, feelings, and memories.

A 'person' means a being that exists alone without being related to other people. A 'person in relationships' (PIR) means a being that exists with other people,

 forming human relationships. When two people form a relationship, each one becomes a PIR. Human beings are considered to be social only when they are in

 relationships. A person can exist without being social. There is no need for a society when a person lives at home, on an island, or in the mountain by oneself.

 A person has the right to exist with freedom, and it equally applies to everyone who exists by oneself. A person has the right to do anything as he or she

 intends and wants to.

However, when a person lives as a PIR, he or she exists with other people and in a society. Order and harmony should naturally follow when people live in

 relationships in a society. Order and harmony are constructed by social customs, morals, ethics, and laws. Each person has the right for freedom and equality,

 but order and harmony are necessary for people to coexist forming relationships. Order may be destroyed, harmony may be lost, the society may fall into

 confusion, and people may not live as PIRs when each person claims one's own right of freedom and equality.

Order and harmony form the basis on which people live in happiness as PIRs, thereby allowing people to pursue happiness and self-realization along with the

 meaning and value of life. A person only needs to pursue one's own happiness, but a PIR pursues happiness together forming relationships. Then, one exists as

 a person and, at the same time, pursues the meaning and value of the existence as a PIR, which is the self-realization of a human being. Humans establish

 homes, societies, and states for this self-realization of human beings.

Pursuing self-realization is to live in happiness as a PIR. Self-realization takes two forms: meaning and value. Meaning comes from the feelings of happiness,

 and value comes from the mood with the anticipation of future happiness. People sometimes pursue the meaning of life to have the feelings of happiness, and

 sometimes pursue the value of life expecting happiness in the future.

Meaning involves the feelings of happiness, and value generally involves mood with the anticipation of future happiness in pursuit of one of the three values:

 economic, relational, and social. In the process of self-realization, people concede part of their rights of freedom and equality as a person, and fulfill the

 meaning and value of life to be happy together as PIRs.