Who said "I'm a very big man in my office."?

This quote is attributed to George Costanza.

I'm a very big man in my office. - George Costanza

"I'm a very big man in my office."

George Costanza Work

"I'm out there Jerry, and I'm lovin' every minute of it."

"These pretzels are making me thirsty."

"Master of my domain."

"It's not a lie if you believe it."

"Hard work never killed anybody."

"Work with purpose and integrity."

"Hard work pays off in the end."

"A man's gotta do what a man's gotta do."