Transcendentalism was a philosophical and literary movement that originated in the 1830s among New England intellectuals who believed in the inherent goodness of both people and nature. Key figures included Ralph Waldo Emerson and Henry David Thoreau. They emphasized non-conformity, self-reliance and intimacy with nature. Thoreau's Walden documented his two years living simply in a cabin to gain spiritual insights through solitude and close observation of nature.