Who said "Life is too tragic to take seriously all the time."?

This quote is attributed to Kenny McCormick.

Life is too tragic to take seriously all the time. - Kenny McCormick

"Life is too tragic to take seriously all the time."

Kenny McCormick Humor

"Mmph mmph mrmph!"

"I'm not fat, I'm just big boned"

"Dude, we're in third grade"

"This is so cool"

"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."