From Metal Gear Solid
"A name means nothing on the battlefield".
"I'm no hero. Never was, never will be".
"Old enough to know what death looks like".
He also comments on the simple pleasures, stating, "You know a lot about science, but you don't know how good a cigarette tastes in the morning".
Expressing a desire for survival, he says, "If you ask me, there's no happiness to be found in death... no peace either. I'm leaving here alive".
From Metal Gear Solid 2: Sons of Liberty
A well-known line from this game is, "Kept you waiting, huh?".
Snake also shares his thoughts on reputation, saying, "A legend is usually bad news. Someone tells it, someone else remembers, everybody passes it on".
From Metal Gear Solid 4: Guns of the Patriots
The game opens with the line, "War has changed".
Reflecting on morality in conflict, he notes, "It's easy to forget what a sin is in the middle of a battlefield".
He expresses his weariness with the world of combat, saying, "This is a world of endless battle. I'm just a tired old man, and there's no place for me here".
Finally, he links the past and future, stating, "Building the future and keeping the past alive are one and the same thing".
More quotes from Metal Gear Solid 2: Sons of Liberty, including those reflecting on legacy and the future, can be found on IMDb and IMDb.