There have been a lot of articles in the press recently about Francis Bacon due to his major at Tate Britain. Most I have seen mainly focus on his personal life and those that deal with his work are full of unquestioning praise of his genius. Adrian Searle has an article on the Guardian's website that offers a refreshing alternative perspective on his work. Searle admits that certain works by Bacon are "essential" but also makes the fair criticism that Bacon had a tendency towards mediocrity and repetition in his later work.
The top image is from 1988 and the bottom one is from 1944
The article is to be found here.