Earlier quoted context omitted.
Can you expand on the boringness? That conflicts with what I think because I believe that engaging hobbies are that vitality which manifests as “playful” and “fun”. Are you willing to try something new, and if you do, are you willing to learn to do it well enough to enjoy it. Engaging with a hobby tends to involve making it part of me - the hobbies I haven’t committed to actually liking and just performed have always…
It seems to me that the perception of boringness can come as a result of earnestness being very niche/focused. Your example is a great one! But if anybody who is not a fan or doesn't know Borges, they would probably find a person earnestly passionately about his writing quite boring -- as one can only have the time and mental energy to be truly earnest about so many things. In contrast, GP's example of popular people…
In pretty much every social gathering with them, they were silent (brooding) and didn't have interesting things to say about things and didn't seem interested to hold a conversation on their own. They seemed to be content listening to others talk.
But in work related meetings, when it came to making crazy bets they were extremely passionate about their belief and commitment and made those decisions like a boss. (They had personality flaws (they could be perceived as rude, unpolished etc in those situations) and they made mistakes when they became insecure while making high-stakes decisions as stakes became bigger.)
In most other cases (in not so crazy decisions that needed to be made everyday), they showed great amount of trust in others. They also showed genuine humility - they didn't assume expertise they didn't have and didn't try to assert that they are the boss.
I have come to believe that the founders mindset and behavior is crucial in attracting and retaining the right kind of talented next 10 employees. After that crucial bit, it is those 10 employees who determine the success probability of the company to a great extent. That founding/forming team is a bigger determinant of success rather than just the founders or just those initial employees by themselves.