I'd say love-satisfaction-understanding-ours

The concept of good and bad !Quality and Quantity ! It seems I want to write about positive and negative.I can categorize every thing into good and bad.You can identify their meaning according to your belief.I don`t know which area is your mean?Psychology ?Social science ,Medicine?

and what is the right way of define the good or bad---bcz what is good for someone can be bad for other and what is bad for someone can be good for other--so how can anyone know what is good or bad

In my opinion the analysis of Good ,Bad ,right,Wrong etc is one of great way to reach some thing that I want to know about them.

I agree with Mr. Jeff and love is important and understanding and analysist of some conditions are important too. :)