Here is anohter good example of having to mutch power
The first thing you do not do is kill other live form ,because we are all spirit.
Look what she is doing when sees lesser live form and think about it if you where just walking around happy and a live and some one comes a long and nukes your ass. Is not nice is it .
http://www.youtube.com/user/Ruckcuz01#p/u/1/J6fBMzgtr1E
