Who said "The future isn't set in stone. We can change it."?

This quote is attributed to The Flash (DCEU).

The future isn't set in stone. We can change it. - The Flash (DCEU)

"The future isn't set in stone. We can change it."

The Flash (DCEU) Freedom

"I'm fast. Really fast."

"Time moves differently when you're moving at super speed."

"You gotta embrace what makes you different."

"Running away isn't always the answer, even when you're fast enough to do it."

"Freedom to pursue your passion is precious."

"Freedom comes at a cost."

"Order isn't restriction. It's freedom."

"Freedom comes with responsibility"