I remember reading somewhere, that Godot's catchphrase is, or was simply "That's my rule!" However, upon further playing the GS3 game with the US translation, it turns out something like "That's one of my rules." I find the first variant better, IMHO. I wonder if Capcom will change it back to "That's my rule!" for the US version, when they go and fix all the typos. That will sound WAY MUCH cooler than "That's one of my many rules."

"That's a rule to live by".

He also uses a few variations.