Who said "But first, I must understand myself."?

This quote is attributed to Scarlet Witch (Civil War).

But first, I must understand myself. - Scarlet Witch (Civil War)

"But first, I must understand myself."

Scarlet Witch (Civil War)

"I can't control it when I'm angry. I can't control it."

"Sometimes the best way to help people is to let them make their own mistakes."

"I just wanted to help. That's all I ever wanted."

"They're going to come after me, and I'm not going to run."