Juve won 2-1 at Inter Milan on Saturday to complete a Milanese double having also beaten AC Milan 2-0 earlier in the season.
Victories over the top two from last year has got the hoardes at the Old Lady of Turin feeling perky.
"If we maintain the anger of this season, we'll win the title," Buffon told Mediaset.
"If we don't do that we'll revert to being an incapable and disorganised rabble as we were before," Buffon added referring to the seventh-placed finishes of the last two seasons.
"Last night we demonstrated character and tempo, I felt there was no way we could lose this game."
Juve lead the table by one point with champions Milan just a point further behind.