Who said "Laughter shared is a victory harder won than battles."?

This quote is attributed to Sif.

Laughter shared is a victory harder won than battles. - Sif

"Laughter shared is a victory harder won than battles."

Sif Humor

"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."

"Never underestimate the power of a good laugh."

"Laughter is the best medicine."

"A good laugh is the best medicine."

"Laughter is contagious and wonderful."