One Piece Chapter 48, page 4-5: GIVE UP ON THAT SEA

Don Krieg reveals his true objective: "RED-LEG ZEFF, YOU'RE A MAN WHO ONCE BRAVED THE WATERS OF THE DEVIL'S HIDEOUT, THE GRAND LINE ITSELF! NOT ONLY THAT, YOU RETURNED WITHOUT INJURY. YOU MUST'VE KEPT A LOG DURING YOUR TIME IN GRAND LINE. SO WHAT I'M GETTING AT IS... HAND OVER THAT LOG TO ME!" Luffy is amazed, asking, "COOL, YOU'VE BEEN TO GRAND LINE, OLD MAN?" Zeff confirms he kept a log and still has it, but firmly refuses: "BUT I SHAN'T HAND THAT OVER TO YOU. THAT LOG IS THE PRIDE OF ME AND MY MEN WHO BRAVELY VENTURED GRAND LINE TOGETHER. IT'S MUCH TOO VALUABLE TO GIVE TO THE LIKES OF YOU!

Don Krieg reacts with anger, declaring, "THEN I'LL JUST STEAL IT FROM YOU!" He admits his defeat in the Grand Line but boasts of his power: "IT'S TRUE THAT I CAME BACK DEFEATED FROM GRAND LINE...! BUT EVEN SO, I'M STILL THE MIGHTY DON KRIEG! THAT OCEAN SHROUDED BY DARKNESS, THE MENTION OF WHICH ALONE CAUSES WEAK MEN TO TREMBLE IN THEIR BOOTS...! I HAD ENOUGH POWER TO CONQUER THAT SEA! ENOUGH MANPOWER! ENOUGH AMBITION!" He claims his only flaw was a lack of information: "I SIMPLY DID NOT KNOW ENOUGH... THE ONLY THING I LACKED WAS INFORMATION! THAT WAS MY ONLY FLAW! WHICH IS WHY I'LL STEAL YOUR TRAVEL LOG AND THIS SHIP!