<span> If, for instance, you say, "Using their legions, the Romans conquered many lands," you leave a great deal in question. How did their legions achieve such dominance? Whom did they defeat, and when? Were legions the sole agents responsible for Rome's triumphs, or did issues of leadership and management in the wake of conquest play a role in Rome's dominion, too?</span>
The poet presents the ways children see their own world as being delightful. They 'dance' and 'play' in this world. This tells us that they are happy there. It is a world adults don't understand because they 'cannot find the centre'.