Socrates famously said that the unconsidered life is not worth living. He meant that a life lived without forethought or principle is a life so vulnerable to chance, and so dependent on the choices and actions of others, that it is of little real value to the person living it. He further meant that a life well lived is one which has goals, and integrity, which is chosen and directed by the one who lives it, to the fullest extent possible to a human agent caught in the webs of society and history.
People travel to wonder at the height of mountains, at the huge waves of the sea, at the long courses of rivers, at the vast compass of the ocean, at the circular motion of the stars; and they pass by themselves without wondering.
Life is one big road with lots of signs,
So when you riding through the ruts,
Don't you complicate your mind
Flee from hate, mischief and jealousy
Don't bury your thoughts; put your vision to reality.
Who knows for what we live, and struggle, and die?... Wise men write many books, in words too hard to understand. But this, the purpose of our lives, the end of all our struggle, is beyond all human wisdom.