"Just because something works, doesn't mean it can't be improved." - Shuri 
"Whatever happens tomorrow, you must promise me one thing. That you will stay who you are. Not a perfect soldier, but a good man." - Dr Erskine 
"I look around at us and you know what I see? Losers... I mean like, folks who have lost stuff. And you think life takes more than it gives, but not today. Today it's giving us something. It is giving us a chance." - Star-Lord 
"It's an imperfect world but it's the only one we got" - Tony Stark 
"I still believe in heroes." - Nick Fury
"Part of the journey is the end."~ Tony Stark
"No mistakes. No do-overs. Look out for each other. This is the fight of our lives."~ Steve Rogers
"I choose to run towards my problems, and not away from them. Because's that- because's that what heroes do."~ Thor
"The world has changed and none of us can go back. All we can do is our best, and sometimes the best that we can do is to start over."~ Peggy Carter
"I love you 3000." - Tony Stark