Of life, we, as individual life span of each society. We will be faced with different environments. Who is the good life, there is a need to plan a life to cope with the changing environment.
Life is the same The life of society, we are faced with different environments. People to live better lives, they need to have a plan to cope with the changing environment.
Life is the same. Each period, each society, we need to find a different environment. People will live well need a life plan to cope with the environment change.