Thinking beyond the practical boundaries, imagining the naturally impossible, thinking like a leader, that's how to expand your capabilities.
Great leaders see things not as they are but as they would like them to be. I'm quite sure if Martin Luther King would have accepted the plight of the African American and never dreamed that one day his children would be able to go to the amusement parks in Alabama with other children, or never dreamed his children would be able to sit hand-in-hand in restaurants.
If he never dreamed, he would not have had the vision that he shared with others as he stood on stage and talked about "I have a dream." Deeply rooted in the American dream, Martin Luther King's dream was a visualization that could be. He saw the world for what we could make of it and the way that it should be one day.