"Two Years Before the Mast" is a memoir written by Richard Henry Dana Jr., an American lawyer and politician. It was first published in 1840. The book recounts Dana's experiences as a common sailor on board a merchant vessel named the Pilgrim, which sailed from Boston to California and back between 1834 and 1836. Dana had originally planned to take a break from his studies at Harvard University due to vision problems. During his hiatus, he decided to embark on a sea voyage to improve his health and gain practical experience. His journey took him around Cape Horn, the southernmost tip of South America, to the Pacific coast of California, where he spent time trading goods along the coast before returning home. "Two Years Before the Mast" provides a vivid and detailed account of life at sea during the early 19th century, including the harsh conditions faced by sailors, the challenges of navigating treacherous waters, and the relationships among the crew members. Dana also provides observations on the social and economic dynamics of the places he visited, particularly California during the Mexican era. The book became highly influential, both as a work of literature and as a firsthand account of maritime life during that period. It has been praised for its authenticity and vivid descriptions, and it remains a classic of American literature. Additionally, it played a significant role in raising awareness about the mistreatment of sailors and contributed to reforms in the maritime industry.