Windows in dreams give us a glimpse of how we see our lives. For instance, if everything on the other side looks cheery, then we're probably in good spirits, but if everything on the other side is gloomy looking or dying, then we're probably feeling sad or something is wrong in our lives. In addition, windows in dreams are thin barriers protecting the dreamer or keeping him away from the outside world. For example, if the window is fogged up, perhaps the dreamer wants to conceal something. Windows can also be the vulnerable areas in homes through which villains break into dreams as well as in real life.