Three Great Subjects
http://truelove.org/csg2/BOOK_2_TRUE_PARENTS.html#bookmark02-1

Three Great Subjects

CSG 2014, Book 2, Chap. 1, Section 3
True Parents are the center of the three great subject partners principle

26 According to the “three great subject partners principle” You should each become a true parent, true teacher and true owner. The root of the three great subject partner idea is true love. True love means to invest more than 100 percent, invest again, and then invest still more. You should become a parent, teacher and owner with this view. The root is one. Therefore, with the true parent at the center, the teacher should come to the right side and the owner to the left. These titles always stand together. You do not necessarily become a true parent just by giving birth to sons and daughters. You have to invest in them and raise them well. (205-021, 1990.07.15)

Omonim’s Anthology, Book 2, Part 2, §12
Let Us Become the Living Embodiment of the True Family Ideal

A way of truth

If we are children of God, we need to become true parents first, just like God. In addition, we have to follow the way of the true teacher and the way of the true owner…. This is the concept of the “three subject partners”. …the Messiah of the Second Advent will…teach the way of the true parents, true teacher and true king…. This is the messianic concept. …we always need to establish the three subject partners of parent, teacher and leader.

New Essentials of Unification Thought, Appendix 2
True Parents are the center of the three great subject partners principle

...social life will be reinforced by the true love of the three great subjects... namely, parents, who are the center of the family, teachers, who are the center of the school, and managers or leaders... who are the center of dominion...

• New Essentials of UT, p. 523

…The role of parents is to bring up their children. The Korean term for raising children is yangyuk ... which consists of two Chinese characters, yang and yuk. Yang means to raise children by giving them food, clothing, and shelter ... Yuk means to educate: parents teach their children family law, manners, ethics, morality, and any necessary knowledge, with a deep and warm heart.

…The role of a teacher is to teach his or her students through the education of knowledge, technical education, artistic education, physical education, and so on... If students raise questions, the teacher should answer sincerely, and if they have any difficult problems, the teacher should help them as much as possible. In this way, a teacher can practice God’s true love. ...Teaching should aim at the cultivation of the personality of students so that they will be empowered to serve society... In order to do this, the teacher ... should first of all have a noble personality and a spirit of serving others.

…The role of the president of a country is to govern the people well and empower them to live well. The role of the governor of a province is to harmoniously govern the province, and the role of the manager of a company is to offer good welfare to employees... once the company has made money, managers should return an appropriate share of it to the employees.. The manager of a company should have an altruistic spirit of service.

..one subject should practice three downward loves through the roles of the three subjects.

• New Essentials of UT, p. 526–529