Ralph Waldo Emerson (1803—1882) was a renowned lecturer and writer, whose ideas on philosophy, religion, and literature influenced many writers, including Henry David Thoreau and Walt Whitman. After an undergraduate career at Harvard, he studied at Harvard Divinity School and became an ordained minister, continuing a long line of ministers in his family. He traveled widely and lectured, and became well known for his publicationsEssaysandNature.