Who said "I have learned that true power comes from within."?

This quote is attributed to Dwight Schrute.

I have learned that true power comes from within. - Dwight Schrute

"I have learned that true power comes from within."

Dwight Schrute Strength

"I am running away from my responsibilities. And it feels good."

"Fact: Bears eat beets. Bears, beets, Battlestar Galactica."

"When you realize you want to spend the rest of your life with somebody, you want the rest of your life to start as soon as possible."

"I am Beyoncé, always."

"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."