Who said "Adventure calls to those brave enough to answer."?

This quote is attributed to Sif.

Adventure calls to those brave enough to answer. - Sif

"Adventure calls to those brave enough to answer."

Sif Adventure

"I have waited lifetimes for this moment."

"A warrior's heart beats strongest in battle."

"We are bound by more than just duty."

"The past shapes who we become."

"The greatest adventure is life itself."

"The adventure of life begins with a single step."

"Adventure finds you when you stop running."

"Fortune and glory, kid."