Quote by Black Widow (Age of Ultron)

"I've been red in the ledger. A lot of red. I'm not going to get it out."

"The hardest thing is living with yourself when you know what you've done."

"I know what it's like to have power forced upon you. It's not freedom."

"Everyone I've ever cared about has left. But I keep moving forward."

"Science helps us understand the world."

"I've witnessed the birth of science, and it continues to amaze me."

"I'm something of a scientist myself."

"The fusion process is self-sustaining now!"