Who said "I won't accept defeat. That's just not who I am."?

This quote is attributed to Goku.

I won't accept defeat. That's just not who I am. - Goku

"I won't accept defeat. That's just not who I am."

Goku Success

"I am the hope of the universe. I am the answer to all living things that cry out for peace."

"Even the strongest of opponents always have a weakness."

"I'm not fighting to win. I'm fighting because I have to."

"The difference between our power levels are like the difference between a firefly and the sun."

"Success comes to those who never give up."

"Success is measured by happiness, not money."

"You make your own luck in this world."

"You have to be organized to be successful in anything."