Who said "I must be brave to face my greatest rival."?

This quote is attributed to Sylvester.

I must be brave to face my greatest rival. - Sylvester

"I must be brave to face my greatest rival."

Sylvester Courage

"Sufferin' succotash!"

"That's all, folks!"

"I'm a-gonna get you yet, you wascally wabbit!"

"Thufferin' thuccotash, that wabbit makes me so mad!"

"Never let fear stop you from chasing your dreams."

"Courage is being afraid but doing it anyway."

"Sometimes you gotta do what you gotta do."

"Sometimes you have to be the monster to stop the monsters."