Pantheism may not have influenced the transcendentals, but transcendentalism has definitely influenced modern Pantheism. In this regard, an understanding of Pantheism can deeply help in understanding transcendentalism. A great influence on Emerson's transcendentalism is Emmanuel Swedenborg , a Swedish scholar and biblical theologian. Swedenberg explored the ideas of the soul and the cosmos. Rejecting traditional beliefs such as the Trinity and original sin, he believed in spiritual freedom.
Philosophy is also a large influence.
Much of the transcendental thought stems from rebellion against the rationalism of the Enlightenment, such as Locke's view that we are what we perceive through our physical senses. Immanuel Kant was a large source of influence. This German philosopher believed that how we interpret the world determines what we actually see. Some people feel that American Transcendentalism is a re-working of Kant's philosophies. There were also many literary influences in the writings of the German Romantics and Early English writers, such as Wordsworth, Coleridge, and Carlyle.