The New Age philosophy is a modern phrase that is close in meaning to what is called the Ageless Wisdom and also not far from the meaning of Perennial philosophy. “The Ageless Wisdom is called the “Golden Thread” that connects the inner, hidden teachings at the heart of the world’s religions, East and West. It’s often referred to as the “Perennial Philosophy” because it’s been present on earth in some form since the beginning of recorded history.” Ageless Wisdom
There is a Wikipedia article on New Age – Wikipedia that contains the following good summary:
“Despite its highly eclectic nature, a number of beliefs commonly found within the New Age have been identified. Theologically, the New Age typically adopts a belief in a holistic form of divinity which imbues all of the universe, including human beings themselves. There is thus a strong emphasis on the spiritual authority of the self. This is accompanied by a common belief in a wide variety of semi-divine non-human entities, such as angels and masters, with whom humans can communicate, particularly through the form of channeling. Typically viewing human history as being divided into a series of distinct ages, a common New Age belief is that whereas once humanity lived in an age of great technological advancement and spiritual wisdom, it has entered a period of spiritual degeneracy, which will be remedied through the establishment of a coming Age of Aquarius, from which the milieu gets its name. There is also a strong focus on healing, particularly using forms of alternative medicine, and an emphasis on a “New Age science” which seeks to unite science and spirituality.”
In a more essential sense the new age philosophy has evolved as a result of the Ageless Wisdom, a term associated in modern times with three main schools (plus many minor off-shoots) that have come into the world during the last 130 years. They are, in order of appearance:
Theosophy (Blavatsky); under the impression of Masters Morya, Kuthumi, & Djwhal Khul. Given out between the late 1800s and early 1900s. Theosophical Society in America
Alice Bailey under the impress of Djwhal Khul. Given out from 1920 to 1950. Lucis Trust
Diverse: Below the above two are a wide diversity of teachings that are while expressing a real measure inspiration, are less comprehensive, less precise, and that often introduce some measure of error.
There are also many earlier precursors of these schools of which the most notable modern one is Transcendentalism. The modern or “New Age” expressions of the Ageless Wisdom are also associated to related schools of ancient times of which Platonism is a notable example.