Who said "I have learned that patience often precedes triumph."?

This quote is attributed to Missandei.

I have learned that patience often precedes triumph. - Missandei

"I have learned that patience often precedes triumph."

Missandei Patience

"I am Missandei of Naath, interpreter and advisor to the Dragon Queen."

"Daenerys Targaryen chose to free us, not because she needed us, but because it was right."

"Knowledge is power, but wisdom is knowing how to use it."

"I have served many masters, but I chose to serve the Mother of Dragons."

"Patience is a virtue I'm still learning."

"I may be a redhead, but I'm not a hothead."

"Patience is a virtue."

"Patience is a virtue I never learned."