Han ville inte döda några inkräktare utan först förstod hur de lärde sig av hans Horcruxes.
"Oh, I doubt that it would work like that," said Dumbledore easily.
"Lord Voldemort would not want to kill the person who reached this
Harry couldn't believe it. Was this more of Dumbledore's
insane determination to see good in everyone?
"Sir," said Harry,
trying to keep his voice reasonable, "sir, this is Voldemort we're-"
"I'm sorry, Harry; I should have said, he would not want to
immediately kill the person who reached this island," Dumbledore
corrected himself. "He would want to keep them alive long enough to
find out how they managed to penetrate so far through his defences
and, most importantly of all, why they were so intent upon emptying
the basin. Do not forget that Lord Voldemort believes that he alone
knows about his Horcruxes."