Who said "I think we're all just doing the best we can"?

This quote is attributed to Paul Varjak.

I think we're all just doing the best we can - Paul Varjak

"I think we're all just doing the best we can"

Paul Varjak

"I'm not a rat, I'm a human being"

"The only thing that separates us from the animals is our ability to accessorize"

"I don't know how to say goodbye. I'm not good at it"

"You know what's wrong with you? Nothing. That's what's wrong with you"