Who said "I'll swim with you to the end of the world."?

This quote is attributed to Dory.

I'll swim with you to the end of the world. - Dory

"I'll swim with you to the end of the world."

Dory

"Just keep swimming, just keep swimming, what do we do? We swim, swim, swim!"

"I suffer from short-term memory loss."

"When life gets you down, you know what you gotta do? Just keep swimming."

"I'm sorry, what were we talking about?"