Who said "You can't phone it in, the audience knows."?

This quote is attributed to Robert De Niro.

You can't phone it in, the audience knows. - Robert De Niro

"You can't phone it in, the audience knows."

Robert De Niro

Actor American Born 1943 (age 83)

"You work hard and you want to be rewarded for it."

"The hardest thing about being an actor is being unemployed."

"I like to play characters that are different from me."

"You've got to understand, acting is not about being famous."