Who said "I believe that humanity is worth saving."?

This quote is attributed to Steve Trevor.

I believe that humanity is worth saving. - Steve Trevor

"I believe that humanity is worth saving."

Steve Trevor

"I can save today. You can save the world."

"It's what you believe that makes you who you are."

"I've learned that not everyone deserves the truth."

"The only thing that stops a bad guy with a gun is a good guy with a gun."