Who said "Time is precious, don't waste it on people who don't matter."?

This quote is attributed to Supergirl.

Time is precious, don't waste it on people who don't matter. - Supergirl

"Time is precious, don't waste it on people who don't matter."

Supergirl Time

"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."

"Time waits for no one."

"Time spent with loved ones is never wasted."

"I've been alive for a long time. Long enough to know that you can't trust anyone."

"The past always catches up with you."