Who said "S-s-strength isn't just physical, it's mental too"?

This quote is attributed to Porky Pig.

S-s-strength isn't just physical, it's mental too - Porky Pig

"S-s-strength isn't just physical, it's mental too"

Porky Pig Strength

"Th-th-th-that's all, folks!"

"Even when things get tough, you gotta keep on truckin'"

"A g-g-good friend is worth more than all the riches in the world"

"D-d-don't let fear stop you from trying something new"

"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."