Yu-Gi-Oh!, Season 3: Enter the Shadow Realm

Kaiba:
I have exactly where I want you… trembling in fear before my Blue-Eyes Ultimate Dragon! Yugi, I've played out this exact moment in my mind over and over and over again! And now, here we are at the top of my Duel Tower, face-to-face! And all you have to hang onto, is some rock from 5,000 years ago! But you're right, this duel is about the past.

Yami-Yugi:
That's true.

Kaiba:
I know. But it's not about some ancient battle you think we fought in another life, because you saw a picture on a stone. When I say this duel is about the past, I mean it's about burying the past for good! Yugi, once I defeat you and go on to win this tournament, I'll be number one, not you!

Yami-Yugi:
I've heard.

Kaiba:
Yes, but there's more. I'll also be closing the book on my past so I can concentrate on my future!