Who said "The weak cannot understand what strength requires."?

This quote is attributed to Cheetah.

The weak cannot understand what strength requires. - Cheetah

"The weak cannot understand what strength requires."

Cheetah Strength

"I always get what I want, and I want everything."

"You could never understand what it's like to be invisible."

"I'm not going back to being ordinary. Never."

"They always looked right through me."

"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."