Who said "A true friend sticks with you through thick and thin."?

This quote is attributed to Luigi.

A true friend sticks with you through thick and thin. - Luigi

"A true friend sticks with you through thick and thin."

Luigi Friendship

"It's-a me, Luigi!"

"Mamma mia!"

"Let's-a-go!"

"I'm-a scared, but I'm-a going anyway!"

"Friendship is built on trust and honesty."

"True friendship is worth more than gold."

"Good friends are like stars, always there even when you can't see them."

"Friendship means sacrifice."