Who said "The secret source of humor itself is not joy but sorrow."?

This quote is attributed to Molière.

The secret source of humor itself is not joy but sorrow. - Molière

"The secret source of humor itself is not joy but sorrow."

Molière Humor

Playwright French 1622–1673

"The greater the obstacle, the more glory in overcoming it."

"One should eat to live, not live to eat."

"Writing is like painting, except I use words instead of paint."

"The true test of civilization is not the census, nor the size of cities, but the kind of man the country turns out."

"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."