The only thing that really matters is that there be an action of goodness, love and intelligence in living. Is goodness individual or collective, is love personal or impersonal, is intelligence yours, mine or somebody else? If it is yours or mine then it is not intelligence, or love, or goodness. If goodness is an affair of the individual or of the collective, according to one's particular preference or decision, then it is no longer goodness.
Each human being has the right to seek out joy, joy being understood as something which makes one content - not necessarily that which makes others content.
You see, Mademoiselle, I have experience, I know the world. To pass the time, why don't you ask every passenger to tell you his life's story? And if there is a single one among them who has never cursed his life, who has not often told himself that he was the unhappiest of men, then you may throw me overboard, headfirst!
There comes a point in your life when you realize:
Who matters,
Who never did,
Who won't anymore,
And who always will.
So, don't worry about people from your past, there's a reason why they didn't make it to your future.
Although we are all the same in not wanting problems and wanting a peaceful life, we tend to create a lot of problems for ourselves. Encountering those problems, anger develops and overwhelms our mind, which leads to violence. A good way to counter this and to work for a more peaceful world is to develop concern for others. Then our anger, jealousy and other destructive emotions will naturally weaken and diminish.