Doesn't Osamu Dazai and Fyodor Dostoevsky feel lonely because they have nobody around their same intellect? How do they manage their emotions?

Question

In Season4, episode 8 of Bungou Stray Dogs, Dazai and Fyodor meets inside the jail. Suddenly, Fyodor initiates to discuss about their life troubles as a sort of counselling session. Although they both can have a hidden motive of exacting information from each other from this but I can't help and think about their both emotional and intellectual life. Is there any person with whom they can feel a sense of connection? Is intellect even necessary to be emotionally open with someone or people would just be unable to understand what is going on in their minds? Is fulfilling their goals in life sufficient for them to move on and living the life? Or have they made their passions, the goals, the only purpose of their lives so as to not allow themselves to think about other things?