Statistical physics and unfounded arguments

[Gvido_Anselmi]

Hello everybody.
I've recently finished work through Weinberg's course in QFT which made my understanding of theoretical physics quite peculiar. For example, I can't understand statistical physics from Landau&Lifshitz book at all as there are a lot of unfounded arguments. I wonder firstly is it a bad sign and secondly is it possible to start study statistical physics from a FT point of view? Can anybody recommend me appropriate books?

 

[Gvido_Anselmi]

I think I should change "unfounded" by "not sufficiently founded in my opinion".