And I quote once again...
In trying to do what you want or what you think is right you also do many other things which you do not mean to do, you're initial act is not pure, it has costs.
From Levinas:
"The comedy begins with the simplest of our movements, each of which carries with it an inevitable awkwardness. In putting out my hand to approach a chair, I have creased the sleeve of my jacket. I have scratched the floor, I have dropped the ash from my cigarette. In doing that which I wanted to do, I have done so many things I did not want. The act has not been pure, for I have left some traces. In wiping out these traces, I have left others. Sherlock Holmes will apply his science to this irreducible coarseness of each of my initiatives and thereby, the comedy may well turn tragic. When the awkwardness of the act turns against the goal pursued, we are at the height of tragedy."