Who said "The most powerful moments are often the quietest ones."?

This quote is attributed to Spencer Tracy.

The most powerful moments are often the quietest ones. - Spencer Tracy

"The most powerful moments are often the quietest ones."

Spencer Tracy Strength

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."

"Strength comes from within."

"A woman should be proud of who she is."

"A strong woman can overcome anything."

"The only thing I'm good at is killing."