“Anthroposophy is a path of knowledge, to guide the spiritual in the human being to the spiritual in the universe… Anthroposophists are those who experience, as an essential need of life, certain questions on the nature of the human being and the universe, just as one experiences hunger and thirst.”

This is attributed to Pierre Teilhard de Chardin in The Joy of Kindness (1993), by Robert J. Furey, p. 138; but it is attributed to G. I. Gurdjieff in Beyond Prophecies and Predictions: Everyone's Guide To The Coming Changes (1993) by Moira Timms, p. 62; neither cite a source. It was widely popularized by Wayne Dyer, who often quotes it in his presentations, crediting it to Chardin, as does Stephen Covey in Living the 7 Habits : Stories of Courage and Inspiration (2000), p. 47. Such statements could be considered paraphrases of Hegel's dictum that matter is spirit fallen into a state of self-otherness. Or any number of thousands of similarly vague quotes by hundreds of predecessors.
Disputed
Variant: We are not human beings on a spiritual journey. We are spiritual beings on a human journey.
Variant: We are not human beings having a spiritual experience; we are spiritual beings having a human experience.

Source: Maitreya's Mission Vol. III (1997)

Source: https://www.goodreads.com/author/quotes/14108295.alexis_karpouzos?page=2

As quoted in A Tribute to Hinduism : Thoughts and Wisdom Spanning Continents and Time about India and Her Culture (2008) by Sushama Londhe, p. 191

The Masters and the Path of Occultism (1939)

Pierre Teilhard De Chardin, in The Phenomenon of Man [Le Phénomène Humain] (1955); Covey quotes this in Living the 7 Habits : Stories of Courage and Inspiration (2000), p. 47
Variant: We are not human beings on a spiritual journey. We are spiritual beings on a human journey.
A paraphrase of De Chardin's statement which has also become misattributed to Covey.
Misattributed
Variant: We are not human beings having a spiritual experience; we are spiritual beings having a human experience.