Henry David Thoreau was an American naturalist, essayist, poet, and philosopher. A leading transcendentalist, he is best known for his book Walden, a reflection upon simple living in natural surroundings, and his essay "Civil Disobedience", an argument in favor of citizen disobedience against an unjust state.

Amos Bronson Alcott was an American teacher, writer, philosopher, and reformer. As an educator, Alcott pioneered new ways of interacting with young students, focusing on a conversational style, and avoided traditional punishment. He hoped to perfect the human spirit and, to that end, advocated a plant-based diet. He was also an abolitionist and an advocate for women's rights.