I have a colleague in my office whom I work with.He is very friendly,jovial,refined and an intelligent intellectual.But wait,not so fast, suddenly he becomes so aloof,uninterested , very quiet,unconcerned,serious and totally isolated and secluded

Most of us arent able to reason out why he suddenly changes.Also he hasnt opened up enough, he has never revealed himself enough – his activities or what he studies,his family,etc.Not that we are very interested in all these things but when we come to these topics, he tries to divert.

He is a very good person,no doubt.I can’t dislike him but then it looks to me as if something very sad,extremely sad must have happened in his life

What do you think?