Final answer:
According to the excerpt, Washington believes that hatred has a damaging effect on the human soul and can spread like a contagion.
Step-by-step explanation:
According to the excerpt, Washington states that hatred damages the human soul. Hatred can have a corrosive effect on one's well-being, causing emotional and psychological harm. Washington suggests that hatred can also be infectious, spreading from person to person like a disease.
Learn more about the effect of hatred on the human soul