Who said "We are defined by the oaths we keep."?

This quote is attributed to Black Panther.

We are defined by the oaths we keep. - Black Panther

"We are defined by the oaths we keep."

Black Panther

"The struggles of your people are your struggles."

"Wakanda will no longer hide in the shadows. We will emerge as a leader among nations."

"I am the king of the dead."

"Just because something is strong doesn't mean we can't question it."