Who said "We can do better. We will do better."?

This quote is attributed to Avengers Tony Stark.

We can do better. We will do better. - Avengers Tony Stark

"We can do better. We will do better."

Avengers Tony Stark Perseverance

"I'm not a genius. I'm just a man in a suit."

"Sometimes you gotta run before you can walk."

"The world's always ending. The end of the line, the end of the road."

"I have a plan. Attack."

"Perseverance is the key to success."

"Don't give up on what you believe in."

"I've been through worse."

"You learn to live with the pain."