Who said "What matters is what you choose to do now."?

This quote is attributed to Steve Trevor.

What matters is what you choose to do now. - Steve Trevor

"What matters is what you choose to do now."

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."