Final answer:
Ralph Waldo Emerson believed that true peace and happiness can be achieved by living a modest and moral life, being true to oneself, and finding spirituality in nature.
Step-by-step explanation:
Ralph Waldo Emerson believed that a person will have true peace and happiness when they live a modest and moral life guided by a social responsibility to mankind and nature. According to Emerson, this involves being true to oneself, thinking independently, and rejecting conformity. He also believed that spirituality and divinity can be found in nature.