Who said "Sometimes being fast means being alone."?

This quote is attributed to Quicksilver (Age of Ultron).

Sometimes being fast means being alone. - Quicksilver (Age of Ultron)

"Sometimes being fast means being alone."

Quicksilver (Age of Ultron) Solitude

"You didn't see that coming?"

"I can move faster than the eye can see."

"Life is too short to waste on anger."

"My sister and I, we're all we have."

"Sometimes being the best means being the loneliest."

"Solitude gives us time to reflect on what matters"

"I'm not good with people, never have been."

"I feel like I'm disappearing."