Reuters: Following are quotes from world leaders and senior officials at the opening of the high-level segment of Dec. 3-14 U.N.-led climate talks in Bali or at press briefings. U.N. SECRETARY-GENERAL BAN KI-MOON: "This is the moral challenge of our generation. Not only are the eyes of the world upon us. More important, succeeding generations depend on us. We cannot rob our children of their future." "Our atmosphere can’t tell the difference between emissions from …