American Transcendentalist philosopher Henry David Thoreau publishes his memoir Walden.

Transcendentalism is a philosophical, spiritual, and literary movement that developed in the late 1820s and 1830s in the New England region of the United States. A core belief is in the inherent goodness of people and nature, and while society and its institutions have corrupted the purity of the individual, people are at their best when truly "self-reliant" and independent. Transcendentalists saw divine experience inherent in the everyday. They thought of physical and spiritual phenomena as part of dynamic processes rather than as discrete entities.