Understanding the laws of the Universe was important. Breaking them would result in a Divine punishment of the Universe. It was important to prevent facing a Divine punishment. After all, they could even bring Gods to fall.
However, there was something even more important than being able to understand the laws of the Universe.
It was to be able to bend the Laws of the Universe to a degree where a silver linen separated him from facing the wrath of the Universe.
That was something Nial was currently trying to do. The Veilures and Veils were existences rejected by the Universe. However, they were still within the norm of the Universe's Laws. The Veils' existence bend the Laws of the Universe to the extreme, and that was also something Nial planned to do.