The transcendental ideas that all beings have the same soul on some concept. This is why intuition is believed to be so true.
Transcendentalist were optimistic. They believed that given the choice between doing good and doing evil humans will choose doing good. This is a key concept of transcendentalism.
Most transcendentalists were people who identified with being Unitarian at one time. Many transcendentalists were at one point Unitarian pastors.
Walden is one of Thoreau's best known books encompassing the idea of self sufficiency and man's ability to commune with nature.
Moncure D. Conway was an abolitionist and author as part of the transcendental movement. He was ordained, but later lost his title because of his strong views on slavery.
Samuel Longfellow was part of the second wave of transcendentalists. Similar to many transcendentalists he started out as a pastor.
Franklin Benjamin Sanborn was part of the second wave of transcendentalists. He is known for being a writer of many of the key figures memoirs.
Margaret Fuller was the first full-time American female book reviewer in journalism. She was considered of the the heads of the American transcendental movement.