Final answer:
In the passage from 'Richard III,' Shakespeare illustrates that King Richard regards the concept of conscience as a means for the weak to control the strong, and he himself instead relies on strength and force, indicating he has no conscience.
Step-by-step explanation:
Shakespeare uses the excerpt from Richard III to express that King Richard has no conscience. The lines 'Conscience is but a word that cowards use, Devised at first to keep the strong in awe: Our strong arms be our conscience, swords our law.' suggests that King Richard believes in the power of strength and arms over the moral guidance of conscience. He sees conscience as a tool for the weak to control the strong and implies that for him, might makes right.