Giovanni Trapattoni has rapped Juventus coach Antonio Conte and Fabio Capello over their public spat.
The pair have traded insults in the press this past week.
"We all have our teams to work with, our styles and our elements to consider, so it would be better if everyone thought only about their own houses," Trap told Sport Mediaset.
"Perhaps they are hyper-sensitive to criticism. I know in Germany they always replay the footage of my outburst in a Press conference, but it all goes back down very quickly.
"We have to focus on our professional logic and ethics. We all do our work and there is room for everyone. It's up to us to have the strength and the thick skin to go forward."