Final answer:
People will waken and listen to hear the hurrying hoof-beats of a steed as well as other sounds such as the flutter of wings and the gentle stirring of life and hope.
Step-by-step explanation:
According to the passage, people will waken and listen to hear not only the hurrying hoof-beats of a steed, but also other sounds such as the flutter of wings and the gentle stirring of life and hope among the uproar of empires and nations. The speaker suggests that great ideas come into the world in a gentle manner and can be heard if one listens attentively amidst the noise of the world.