Some insights are too practical to be genius, but their practicality is their genius. They ground the highest thoughts. Virtually every mathematician who has studied infinity has lost their sanity. As I have pondered infinity, I have found myself falling into that dark tunnel.
I realized that pondering the imponderable is fine as long as one does not seek an explanation. If you are striving for an answer that cannot be found, it sets up a structure inside the mind that leads to absolute instability. A wise man chooses his obsessions carefully.