It sounds cliched, but superheroes can be lonely, vain, arrogant and proud. Often they overcome these human frailties for the greater good.

Every villain is a hero in his own mind.

Well, I think there are no villains in this world. There are just misunderstood heroes.

You never know what's around the corner. It could be everything. Or it could be nothing. You keep putting one foot in front of the other, and then one day you look back and you've climbed a mountain.

Haters never win. I just think that's true about life, because negative energy always costs in the end.

Make love, not war. Unless you’re Loki, in which case: do what you want.

We all have two lives. The second one starts when we realize that we only have one

Tony Stark in 'Iron Man' helped wider audiences finally embrace the enormous talent of Robert Downey Jr.

Never, ever, let anyone tell you what you can and can't do. Prove the cynics wrong. Pity them for they have no imagination. The sky's the limit. Your sky. Your limit. Now. Let's dance.

Don’t judge people on who they used to be. Allow them to be who they are now.

I think everyone should pursue their dreams. Whether you want to play football, act, sing, become a writer or whatever you have burning inside you as you’re growing up, you should pursue it.

Since my arrival in Rome, I have had many opportunities to wonder if compassion’s opposite is cruelty, or to reflect whether or not indifference would serve as a better black to its white.

Thousands have lived without love, not one without water.

But I would reinvent myself if I could. As a sexy leading man! We all would like that, but I don't know how to.

Big results require big ambitions.

If for harming himself a man forfeits his freedom, then he is not free at all.

To me, self-description is a calamity.

Lincoln, steeped in the Bible and Shakespeare, set an impossibly high bar for presidential prose.

Most leaders don't need to learn what to do. They need to learn what to stop.

My kids have grown up knowing nothing other than me being gone all the time and playing in golf tournaments. That's what they know.

The difference between a hero and a villain is that they just make different choices.