What does this sentence mean "others laugh at me too crazy, and I can't see through others' laughter"?

He has his own pride and pursuit. Others don't understand his pursuit, but only know how to judge a book by its cover.

Different ideals, different pursuits. It's like a calligrapher walking into a village that is good at catching fish, visiting the village all day, writing and drawing, and the villagers all laugh at him. What's the use of good calligraphy? Can't be eaten as food.