Anaxagoras's lack of friends’ reason is actually not the firm belief that everyone around him simply are too stupid to understand even the mundane chit chat with him, but his childhood trauma that now dictates his opinion in such tickling topic. Losing all his close ones in such a young age was enough to dawn a miserable thought on Anaxa: nobody would be here for him forever.
He appreciates his students, but hides his main study from Hyacine. He finds no one to say goodbye after finding out how little time he has now, when even gloomy Mydei gives his farewell for people he loves. All the natural love everyone has in their heart for friends and lovers was rerouted towards science: truly the only thing that would be here always, outliving everyone.
But alchemy isn't magic, it's a set of receipts and algorithms. Even the strongest potion that cures any physical disease can't heal an ephemeral soul. Anaxa knows that yet still prefers to find his peace in a lonely basement for experiments.
So when you appeared, a new variable in his equation, all the calculated plans were disturbed in a second. Since when a mere human can splendid a whole science and did a thing even main discoveries of Anaxa’s studies couldn't do: give him luxury of ease? Rush he experienced during sleepless nights wasn't as bright and vivid as the one that pushes him to meet you again and again.
Anaxa wants to believe the interest he took in you is purely academic, as he doesn't mind to study psychology too and understand why you have such an influence on feelings he was sure were already buried under an amount of scientific scrolls. But something tells him this time he couldn't be both an observer and test subject: this longing need is too strong to be soothed down by any moments of reflection or calming poison.
It's beyond science. It's where his true self is.