For that matter, what does the Clock Tower think of the Quincies? The ability to manipulate souls is Heaven's Feel, the Einzberns' lost True Magic, one of the causes for creating the Grail War in the first place. While not entirely the same, the Quincy power to interact with the souls of the dead and utterly destroy them if need be is surely related.
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"Anko, what you do in your free time is your own choice. Use it wisely. And if you do not use it wisely, make sure you thoroughly enjoy whatever unwise thing you are doing." - HymnOfRagnorok as Orochimaru at SpaceBattles
woot Med. Eng., verb, 1st & 3rd pers. prsnt. sg. know, knows
--
"Anko, what you do in your free time is your own choice. Use it wisely. And if you do not use it wisely, make sure you thoroughly enjoy whatever unwise thing you are doing." - HymnOfRagnorok as Orochimaru at SpaceBattles
woot Med. Eng., verb, 1st & 3rd pers. prsnt. sg. know, knows