Who said "I've learned that honesty is the foundation of trust."?

This quote is attributed to Olaf.

I've learned that honesty is the foundation of trust. - Olaf

"I've learned that honesty is the foundation of trust."

Olaf Truth

"Some people are worth melting for."

"I like warm hugs."

"Hi, I'm Olaf, and I like warm hugs."

"You can't marry a man you just met."

"Lucy, you got some 'splainin' to do!"

"You must always be honest with the people you love."

"Truth always comes out in the end."

"Honesty is always the best policy."