Who said "I approach each role as if it were my first and last."?

This quote is attributed to Spencer Tracy.

I approach each role as if it were my first and last. - Spencer Tracy

"I approach each role as if it were my first and last."

Spencer Tracy Motivation

Actor American 1900–1967

"The best way to find yourself is to lose yourself in the service of others."

"There is a nobility in compassion, a beauty in empathy."

"Success is not final, failure is not fatal."

"The only way to do great work is to love what you do."

"I believe in working hard for what you want."

"Never underestimate the power of determination."

"I don't need a reason to fight."

"The most important thing is the mission. Nothing else matters."