Who said "Perseverance is spelled S-Y-L-V-E-S-T-E-R."?

This quote is attributed to Sylvester.

Perseverance is spelled S-Y-L-V-E-S-T-E-R. - Sylvester

"Perseverance is spelled S-Y-L-V-E-S-T-E-R."

Sylvester Perseverance

"Sufferin' succotash!"

"That's all, folks!"

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

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

"Perseverance is the key to success."

"Don't give up on what you believe in."

"I've been through worse."

"You learn to live with the pain."