After Dumbledore finished that evening's lesson, Harry could not help asking, "Sir, do you want me to search for Voldemort's Horcruxes?"
"If necessary, I will take you to search for Voldemort's Horcruxes, but not now, Harry." Dumbledore reached out and gently pushed the cabinet holding the Pensieve shut. "I would rather you learned about Voldemort through these memories. Only by knowing our enemy better can we find a way to deal with him."
"Honestly, I don't know what Voldemort's weakness is. Unless being ugly counts?" Harry noticed Dumbledore's slightly raised brow and quickly added, "I was only joking, sir."
"What do you think Voldemort's weakness is?" Dumbledore asked with a smile.
"Voldemort is very afraid of death, and he is arrogant and conceited. Oh, and he likes collecting things. He also seems stubborn, always wanting to kill me himself. If he had let the Death Eaters do it, I might have died long ago."
"Harry, you actually know Voldemort very well." Dumbledore nodded approvingly.
"But I don't see what use knowing all that is." Feeling somewhat frustrated, Harry changed the subject. "By the way, sir, how many Horcruxes have you found?"
"Several, but I'm afraid I must keep that secret for now. At present, we need part of Professor Slughorn's memory to determine the number of Horcruxes." Dumbledore looked up at Harry and said seriously, "You need to work harder, Harry. I believe you will succeed."
"I've been trying to use Liquid Luck to go and try my luck with Professor Slughorn, but it hasn't gone very well." Harry felt a little depressed whenever he mentioned it. Even taking Liquid Luck had not worked, making him realize just how difficult the matter truly was.
"Liquid Luck is indeed an invaluable thing for most people, but you need to know how