The Original Lines Aerith said to Donald and Goofy In Traverse Town, while Leon and Yuffie was explaining to Sora what the Keyblade was. It's right after you go to the Second Distract, see one of the residents turn into a heartless, then go back to the First Distract and then Leon knocks Sora out.

This trailer gave me shivers, I'm getting the game tonight I'm soooo excited. Friday night I'm getting a thing of popcorn and 358/2 Days is going to be running for friday's movie night xD The facial expressions look so much better, everything just looks so nice and cleaned up. It was a nice touch adding Xion's voice to the beginning

Spoiler

it would have been more interesting if Ventus had said that though, since he IS (or at least the theory is) that he's the voice in Sora's head a the start of KH1, Since he's in Sora's heart and stuff

I haven't watched all the Days cutscenes yet, but I'm sure it's there somewhere

For some reason that trailer seemed more awesome than usual. Maybe it's because the way it looks it made the game feel new for the PS3, compared to when it first came out on the PS2.