Who said "I've learned that laughter is essential to our survival."?

This quote is attributed to Fantastic Four - Mr. Fantastic.

I've learned that laughter is essential to our survival. - Fantastic Four - Mr. Fantastic

"I've learned that laughter is essential to our survival."

Fantastic Four - Mr. Fantastic Humor

"The only way to discover the limits of the possible is to go beyond them into the impossible."

"We're not just a team. We're a family."

"With great power comes great responsibility."

"I didn't become a scientist to give up when things got difficult."

"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."