Who said "The most important knowledge is self-knowledge."?

This quote is attributed to Margaery Tyrell.

The most important knowledge is self-knowledge. - Margaery Tyrell

"The most important knowledge is self-knowledge."

Margaery Tyrell Knowledge

"A woman's greatest weapon is the ability to make men want to please her."

"I do love the people of the Reach, truly I do."

"The rose has thorns as well as beauty."

"Every woman wants to be a queen in her own right."

"We're not just after treasure. We're preserving history."

"The mind is humanity's greatest tool."

"A tidy room reflects a tidy mind."

"You can learn a lot about a person by how they keep their space."