Who said "War is the failure of diplomacy and the triumph of folly."?

This quote is attributed to Booth Tarkington.

War is the failure of diplomacy and the triumph of folly. - Booth Tarkington

"War is the failure of diplomacy and the triumph of folly."

Booth Tarkington War

Novelist American 1869–1946

"The only honest art form is laughter, comedy. You can't fake it."

"In your youth you are a reader; in your middle age you are a leader; in your old age you are a listener."

"Midway through the journey of our life, I found myself uncertain of the path forward."

"The mind, when it wanders, discovers truths that diligence cannot find."

"Some battles are worth fighting."

"Sometimes you have to become the monster to stop the monsters."

"Skynet sent me back through time to kill you."

"War teaches us the value of peace."