Who said "I've got more important things to do, Morty."?

This quote is attributed to Pickle Rick.

I've got more important things to do, Morty. - Pickle Rick

"I've got more important things to do, Morty."

Pickle Rick

"I'm a pickle, Morty! I'm Pickle Rick! Whoa!"

"The key to a good life is not thinking about it too much."

"Love is just a chemical reaction that compels animals to breed."

"Nobody exists on purpose, nobody belongs anywhere, everybody's gonna die."