Who said "A friend who doubts you when tested is no friend at all."?

This quote is attributed to Thor (The Avengers).

A friend who doubts you when tested is no friend at all. - Thor (The Avengers)

"A friend who doubts you when tested is no friend at all."

Thor (The Avengers) Friendship

"I am Thor, god of thunder!"

"You lack the strength to wield such power."

"I have nothing but respect for you, and your work."

"There are no men like me."

"Friendship is built on trust and honesty."

"True friendship is worth more than gold."

"Good friends are like stars, always there even when you can't see them."

"Friendship means sacrifice."