kirei training

 "It's not like that... if it was, then this guy's situation of the past three years cannot be explained. If his faith was chaste, it would be impossible for him to transfer into the Magus Association; it seems to be an order from the Holy Church, or it's possible that he was more faithful to the religious doctrine than the organization. But even this cannot explain it, because there is no necessity to train in thaumaturgy this seriously. Look, Tōsaka Tokiomi's report about Kirei given to the Association. The scope of training includes alchemy, spiritual evocation, summoning, divination... he is even more adept at healing magecraft than Tōsaka Tokiomi. What exactly is the reason for this enthusiasm?"

Irisviel continued reading the document, all the way to the end where Kotomine Kirei's ability summary was. "...I say, this Kirei really is kind of strange, but is it worth it for you to scrutinize to this degree? Although he seems to be very talented, he's not really a cut above other people."

"Ah, that's what I find strange." Looking at the uncomprehending Irisviel, Kiritsugu patiently explained. "No matter what this man does, he cannot reach the 'first-rate' level. When it comes down to it, he's not some sort of genius, just a normal man. But his achievement of quick results through complete and total effort is indeed scary. Certainly he has to exert ten or twenty times more effort than other people to achieve this level, but he actually stops when there's only one step left, and then without any lingering love transfers into another region. All the things he raised laboriously all along are tossed out like trash."

- Fate/Zero, Act 1, Part 2