Who said "That's a good question."?

This quote is attributed to Droopy.

That's a good question. - Droopy

"That's a good question."

Droopy Philosophy

"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."

"I've seen the worst humanity has to offer."

"Sometimes I wonder if the world is worth saving."

"Every choice shapes our destiny."

"Order is the foundation of a good life."