Season 3, Episode 13: "Dual"
Sylar: 

On the sixth day, God created man in his own image. Now it's up to us to figure it all out. Right, wrong. Good, evil. In each of us is the capacity to decide what drives our actions. So what is it that makes some choose selflessness, the need to devote oneself to something greater, while others know only self-interest? Isolating themselves in a world of their own making? Some seek love, even if unrequited, while others are driven by fear and betrayal. There are those who see their choices as dark proof of God's absence, while others follow a path of noble destiny. But in the end, good, evil, right or wrong, what we choose is never what we really need. For that is the ultimate cosmic joke. The real gift that God has left behind.