Did I ever tell you what the definition of insanity is? Insanity is doing the exact... same fucking thing... over and over again expecting... shit to change... That. Is. Crazy.

I used to be an adventurer like you … then I took an arrow in the knee.

War.. war never changes.

Do you like hurting people?

Niko, let's go bowling.

Tom: "Turing tests are tests designed to tell humans and machines apart. Typical problems only solvable by a human. A combination of logical and lateral thinking."
Ava: "So you can't complete these tests Tom?"
Tom: "No. That is why I am glad you are here to help."

But as long as there are people, there will always be war.

I survived because the fire inside me burned brighter than the fire around me.

There are two kinds of people: ones that are trying to build their future and ones that are trying to rebuild their past.

You are approached by a frenzied Vault scientist, who yells, "I'm going to put my quantum harmonizer in your photonic resonation chamber!"

I am diversification personified... or personification diversified.

The last time a big naked dude said he could help me, it did not end well.

Ah shit, here we go again.

Cortana: "What if you miss?"
Master Chief: "I won't."

Death is a preferable alternative to communism.