Levi Lincoln Sr. graduated from Harvard College and established a law practice in Worcester. He played a significant role in drafting the Massachusetts state constitution and was a charter member of the American Academy of Arts and Sciences. Lincoln transitioned from private practice to public service, holding various state offices, including Attorney General under President Jefferson. He was also involved in notable legal cases concerning slavery and published critiques of Federalist policies.

Levi Lincoln Sr. exhibits an intriguing blend of ideological adaptability and principled stands, particularly in his views on slavery and federalism. His legal advocacy against slavery, grounded in natural law, contrasts with his later alignment with Jeffersonian Republicans, revealing a strategic yet principled approach to regional and national issues. Lincoln's rhetorical style, as evidenced by his pamphlet "Letters to the People, by a Farmer," shows a calculated effort to counter Federalist influence through populist arguments. His unexpected convergence with opposing factions on economic policies, such as supporting Jefferson's embargo, further highlights a highly localized and calculated political strategy.