Who said "Laughter is truly the best medicine for a weary soul."?

This quote is attributed to Irwin.

Laughter is truly the best medicine for a weary soul. - Irwin

"Laughter is truly the best medicine for a weary soul."

Irwin Humor

"Nergal's my best friend!"

"I'm a little Jewish boy with a big heart!"

"Gee, that's swell!"

"I love my mommy and daddy!"

"Never underestimate the power of a good laugh."

"Laughter is the best medicine."

"A good laugh is the best medicine."

"Laughter is contagious and wonderful."