Who said "I think strength comes from within."?

This quote is attributed to Irwin.

I think strength comes from within. - Irwin

"I think strength comes from within."

Irwin Strength

"Nergal's my best friend!"

"I'm a little Jewish boy with a big heart!"

"Gee, that's swell!"

"I love my mommy and daddy!"

"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."