Who said "We can do anything if we work hard enough."?

This quote is attributed to Leslie Knope.

We can do anything if we work hard enough. - Leslie Knope

"We can do anything if we work hard enough."

Leslie Knope Perseverance

"I have not slept in 37 hours. I have achieved so much."

"Treat yo' self."

"I'm not crying. I'm just sweating from my eyes."

"Everything is the worst thing that's ever happened."

"Perseverance is the key to success."

"Don't give up on what you believe in."

"I've been through worse."

"You learn to live with the pain."