Born in Concord, Massachusetts, Thoreau was a key figure in the Transcendentalist movement. He believed in the importance of individual conscience, living in harmony with nature, and resisting unjust government policies. His time spent living in a cabin by Walden Pond inspired his famous book, 'Walden,' where he detailed his philosophy of simple living and self-sufficiency.

Thoreau's ideas, called Transcendentalism, emphasize the importance of being true to yourself and connecting with nature. He believed that real creativity comes from living simply and being self-reliant. Thoreau thought that by living closely with nature and rejecting material things, people could change themselves and society for the better.

Walden: Thoreau’s reflections on simple living in natural surroundings, where he explores themes of self-reliance, nature, and individualism. Civil Disobedience: An essay where Thoreau argues for nonviolent resistance to unjust laws, emphasizing the importance of individual conscience.

Thoreau was influenced by Ralph Waldo Emerson, a fellow Transcendentalist, who encouraged him to explore his philosophical ideas. He was also inspired by Eastern philosophy, including the teachings of Hinduism and Buddhism.

Thoreau’s ideas on civil disobedience influenced key figures such as Mahatma Gandhi and Martin Luther King Jr., who used his philosophy to support nonviolent resistance. His environmental views also shaped the modern conservation movement.

Thoreau’s rejection of societal norms and his criticism of government policies, particularly his refusal to pay taxes that funded slavery and the Mexican-American War, were considered radical in his time. His lifestyle of solitude and self-reliance was also seen by some as impractical.

Critics have argued that Thoreau’s ideas of self-reliance and civil disobedience are too idealistic for larger society. Others have pointed out the contradictions in his lifestyle, as he was not entirely self-sufficient during his time at Walden.

Thoreau’s work remains influential in discussions of environmentalism, civil rights, and personal freedom. His writing on civil disobedience is still widely read by activists and scholars, and his philosophy of simple living continues to inspire movements like minimalism and sustainable living.