Who said "Fear is but a test of one's true character."?

This quote is attributed to Irwin.

Fear is but a test of one's true character. - Irwin

"Fear is but a test of one's true character."

Irwin Fear

"Nergal's my best friend!"

"I'm a little Jewish boy with a big heart!"

"Gee, that's swell!"

"I love my mommy and daddy!"

"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."