Being the most developed, the most civilized, the most intelligent, the wisest, the most powerful and the most social creature on the earth (not in the universe), human-being should try to understand, generate, produce, build up, develop, propagate and inter-relate better and the best behavioral-styles and life-styles and finally to follow or imitate them. That is one of the main themes of human-life. Secondly, being the most developed, the most civilized, the most intelligent, the wisest, the most powerful and the most social creature on the earth (not in the universe), human-being should try to understand, comprehend, find out, learn and respect the life-rhythms of brother human-beings, to select and follow or imitate the life-rhythms of brother human-beings and to help brother human-beings in developing, tuning, modifying, changing and beautifying their life-rhythms. That is another theme of human-life. But, as the most intelligent and the wisest creature on the earth (not in the universe), human-being must know that there are no perfect, excellent and constant behavioral styles, life-styles and life-rhythms on the earth and all behavioral styles, life-styles and life-rhythms change, develop, modify and evolve with time and must be able to select or pick up better and the best behavioral style, life-style and life-rhythm while respecting the rest of the contemporaneous behavioral styles, life-styles and life-rhythms that survive or exist on the earth. In addition to these two themes, one of the major themes of human-life is to live intelligently and wisely as a normal, average and moderate human-being while following better and the best behavioral style, life-style and life-rhythm in this fast, rapid, rough and sometimes fierce, brutal, dangerous, malignant, wicked and overwhelming social flow. But, being the most intelligent and the wisest creature on the earth (not in the universe), the most excellent, the most exalted, the most paramount and the most important theme of human-life is to find out, recognize, understand and identify the chief aim or main target or noble purpose of human-life and being a human-being. Biologically, the chief aim or main target or noble purpose of human-life and being a human-being is to propagate self-kind or reproduction. Generally, the chief aim or main target or noble purpose of human-life and being a human-being is to live intelligently and wisely as a normal, average and moderate human-being while following better and the best behavioral style, life-style and life-rhythm and propagating self-kind or reproducing. But, being the most intelligent and the wisest creature on the earth ( not in the universe), human-being must think twice and try to find out, recognize, understand and identify what the chief aim or main target or noble purpose of human-life and being a human-being should be. That is the most excellent, the most exalted, the most paramount and the most important theme of human=life. After finding out, recognizing, understanding and identifying what the chief aim or main target or noble purpose of human-life and being a human-being should be, you, as a human-being must try to find out, recognize, understand and identify what your real destination should or will be according to the chief aim or main target or noble purpose of human-life and being a human-being and the way in which you should go on your journey to reach your real destination. Finally, you, the most intelligent and the wisest creature on the earth (not in the universe) or the human-being must follow the way in which you should go on your journey to reach your real destination according to the chief aim or main target or noble purpose of human-life and being a human-being. To find out, recognize, understand and identify all these things and to follow these things are up to you, the human-beings. However, the chief aim or main target or noble purpose of human-life and being a human-being may be (or is) a Universal One instead of a simple earthly or worldly one. Understanding and perceiving of this is also up to you, the human-beings. If you, the human-being, the most intelligent and the wisest creature on the earth (not in the universe) identified, understood and perceived all these major themes of human-life and being a human-being and are achieving and reaching to all these themes of human-life and being a human-being completely, properly and really while living intelligently and wisely as a normal, average and moderate human-being, following better and the best behavioral style, life-style and life-rhythm and may be while propagating self-kind or reproducing and while following the way in which you should go on your journey to reach your real destination according to the chief aim or main target or noble purpose of human-life or being a human-being or may be according to a Universal Target or Universal Aim, definitely you are or will be One of the Perfect Human-beings on the earth.