Who said "Fear is the only rational response to existence."?

This quote is attributed to Droopy.

Fear is the only rational response to existence. - Droopy

"Fear is the only rational response to existence."

Droopy Fear

"I'm so happy."

"Hello, I'm so glad to see you."

"That makes me so sad."

"I'm afraid I have some bad news."

"Face your fears with courage."

"You can't live your life in fear."

"Snakes. Why'd it have to be snakes?"

"Fear is just another obstacle to overcome."