1.If you are you,then you are ,,I" for you,and if I am I, I am ,,I" for me,so you are I, but only for you.For me you are not ,,I" ,for me you are ,,you".
2.Letter
I can't t understand this shit.
If you are you,then you are I for you,and if I am I, then I am I for me and you are I for you.