Who said "I've learned that being vulnerable isn't weakness."?

This quote is attributed to Supergirl.

I've learned that being vulnerable isn't weakness. - Supergirl

"I've learned that being vulnerable isn't weakness."

Supergirl Wisdom

"I'm not just Kara Danvers. I'm also Supergirl."

"Being a hero isn't just about having powers. It's about what you choose to do with them."

"I have to believe that there's good in people, even when they give me reason not to."

"My family is what makes me strong."

"I'm not angry, I'm just disappointed."

"The best things in life are free."

"You can't have everything in life, but you can have what matters most."

"A woman's intuition is rarely wrong."