Words when used effectively are beautiful way of communicating. While words help most of the time, some times words can also ruin something nice. Some things are best left unsaid. As soon as it's thrown into the icy cold waters called Words, they lose their true meaning. They cease to feel authentic.
Gestures don't need words. Some times you do things because it makes you feel good. You don't question it, you don't doubt it. Heck you don't even think about it. But as soon as you say it, it's gone.
Similarly, if we explain our paintings, photographs or any form of art, we're leaving little or no room for the viewer's imagination for their version of interpretation. Not to say that there shouldn't be anything to speak of in the work but stay with me for a moment here.
I don't know if I'm right or wrong but the piece will probably not have the same impact or mystery around it if I don't leave the room for viewer's self interpretation of what I'm showing to them. If it's generating questions in viewer's mind and leaving unanswered questions wanting to know more, I think we've created something nice. No need to explain it.
Take today's portrait for example. If I tell you what I want to say with it, you won't find it interesting. If I don't, you'll probably want to know what am I trying to say. I won't tell in either case.