Alot of good ones already, I added some more
"A hero need not speak. When he is gone, the world will speak for him."
-Halo
"..."
-Link (any Zelda game)
"It's easy to forget what sin is in the middle of a battlefield"
-Solid Snake, MGS1
"Trust me."
-BT-7274, Titanfall 2
"NOTHING IS MORE BADASS THAN TREATING A WOMAN WITH RESPECT!"
-Mr. Torgue, Borderlands 2
"Often when we guess at others' motives, we reveal only our own"
-Mara Sov, Destiny
"I miss the internet"
-Graffiti from Left 4 Dead
"Some things in life, we just do."
-Lightning, FFXIII
"I... it's that stupid frog! Kissed any princesses lately?!"
-Magus, Chrono Trigger