nature

"Please, stop complaining..."

"What?"

"Yeah, he acted this way because he is this way.  He can't change that, it's his nature.  You complaining won't change him."

"Who said about changing him?"

"Then why do you keeping complaining?"

"Because it is also my nature.  I can't change this.  How come you want to change me?  You two faced evil brat!" 

"........"