Can you see sadness in someone's eyes?

Yes, you can see sadness in someone's eyes. I have seen it in the eyes of a man who keeps running from love and relationships. He would never explain what is it that bothers him, but he is full of sadness... I felt sorry for him, this sadness is pervasive and reveals something about his troubled soul... Can't explain how I see the sadness, i just do, it is there.