One of them Notes

I have all these notes. They're in my phone, on my desk, at work, in my head, everywhere. One of them reads like this: 

Today I saw an old man wearing a superman hat. He must've been around eighty, but in good shape still. He was probably a sportsman in his younger days. For some reason he seemed troubled, traces of anxiety were occupying his face. Not in a nervous way, though. The man looked sad, as if something had been bothering him for a long time. Something big, something bigger than him, something he had no control of.

That's it. That's the note.