What does Sampath's treatment of the mail tell about him?

What kind of personality traits are revealed by Sampath's actions, such as reading the letters received in the post office at his job?

I think it may show that he is curious about people and wishes to study them, but he is rather introverted and does not want to learn through interaction.

Being as it may be just curiosity, it could maybe mean something entirely; like elaynegriswol13 said.

I think that Sampath had ADD. When he was working at the post office, he could not work on the same thing for a long period of time. I think that Sampath was just not a very focused person and was always thinking about other things. He was interested in everything. I think losing focuses was just how his brain worked.