There was a spider in that cave. It was trying to reach the roof of the cave. It failed again and again. After every fall, the spider tried again. It did not lose heart. The spider reached its cobweb in the several attempt.
The spider taught King Bruce a great lesson. It filled him with new hope and courage. He came out of the cave and gathered his forces. This time he fought bravely. He was successful in making his country free.
Moral: Try, try again till you succeed.