Who said "I think laughter is the secret to everything."?

This quote is attributed to Katharine Hepburn.

I think laughter is the secret to everything. - Katharine Hepburn

"I think laughter is the secret to everything."

Katharine Hepburn Humor

Actress American 1907–2003

"I never lose sight of the fact that just being is fun."

"If you obey all the rules, you miss all the fun."

"The person who says it is impossible should not interrupt the person doing it."

"I'm an atheist, and that's it. I believe it's nothing mysterious to not believe in God."

"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."