On the other hand, a millennium-class foundation is needed for the Hemonomic Principle to function, and even if a Dead Apostle with hundreds of years of activity were to inherit it they would be crushed by that curse. Properly speaking it was not something that Vlov could withstand, but thanks to a technique given to him by a certain Dead Apostle as well as his desire for revenge against that person he managed to retain his sanity until the end.

Tsukihime Material I - GLOSSARY: Hemonomic Principle