-- the universe won't wait for you
Wow I didn't know they were using the Episode N animation... it really doesn't work with that song. :(
I don't know what N said in the dub, but in Japanese he said something to Meowth like... "why would you speak human when Pokémon have their own beautiful language?" and that's kind of like... wow N way to be rude? Because that statement kind of puts down the amount of effort that obviously went into Meowth learning human. And N doesn't even know the reason behind it and doesn't care- he's not even asking "why" really, he's saying "you shouldn't".