Adherents feel that naturalistic pantheism might best be understood through the teachings of Spinoza and Taoism historically, and the Universal Pantheist Society (UPS) and World Pantheist Movement (WPM) today. Although the UPS is the older of the two, it has seen decreased activity in recent years. The WPM (founded by former UPS vice-president Paul Harrison), on the other hand, has expanded more considerably due to its promotion of "scientific pantheism", which many critics claim is essentially no more than "atheism for nature lovers" ...

See also:

Naturalistic pantheism, Naturalistic pantheism - Adherents, Naturalistic pantheism - Criticism and response, Naturalistic pantheism - Semantics, Naturalistic pantheism - Mysticism, Naturalistic pantheism - Spirituality

Read more here: » Naturalistic pantheism: Encyclopedia II - Naturalistic pantheism - Adherents