• The True Meeting of Science and Spirituality (SAND)

    The mission of Science and Nonduality (SAND) is to forge a new paradigm in spirituality, one that is not dictated by religious dogma, but that is rather based on timeless wisdom traditions of the world, informed by cutting-edge science, and grounded in direct experience.


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    SAND15 Italy Retreat:Exploring the Nature of Consciousness

    May 24th – 29th 2015
    Titignano, Orvieto, Italy

    In the five days of this retreat we invite you to participate in the investigation of the nature of consciousness, using direct experience, spiritual practices, scientific understanding, dance or simply enjoying a glass of wine with a friend surrounded by the beauty of the Tuscan countryside.


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    SAND Has Found a Home

    We invite you to become one of the few founding community members of Avalon Hot Springs, the new permanent home of SAND.

    Avalon Springs is 318 acres of stunning Northern California property abundant with mineral-rich hot springs, located near Middletown, California just 2 ½ hours from San Francisco.

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    Freedom From Imagination – Words of Shri Nisargadatta Maharaj

    “A pinprick of “knowingness” has flashed against
    the background of my innate “not-knowingness”.
    In it appear all the universes.”

    ~ Nisargadatta Maharaj

    Now available in our store: A unique collection of quotes by Sri Nisargadatta Maharaj (135 pages, limited edition of 300 copies, rendered by PRASANNA) selected from an original Marathi manuscript, which has never been previously translated.

    Order Now

  • Welcome home!

    The new SAND website is designed to facilitate the expansion of our community, while continuing to ignite the dialogue between science and spirituality and to inspire you with stimulating content contributed by leading scientists, mystics, authors and teachers… and by you!


  • Extensive Video Archive Science and Nonduality

    Watch hours of video material of conference talks, media product excerpts and relevant video clips online… for free!


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    Now available: SAND ANTHOLOGY vol. 4 (3 DVD set)

    Another groundbreaking collection of conversations with leading scientists, contemporary mystics, authors and teachers. Science and Nonduality Anthology Volume 4 takes you on a journey into the most compelling questions of our time, ranging from the mystery of time, emotions, evolution to awakening.



David Martin Castan for Metzinger

What is Spirituality? – Spirituality and Intellectual Honesty, (1/6)

Is there something like a logical core, an essence of the spiritual perspective? In the history of Western philosophy, the Latin term spiritualitas has three main meanings.  First, it has something like a judicial and cultural…


The Other Syntax: A Universe Without Beginning

“Did the universe really begin?” asks Carlos Castaneda in The Active Side of Infinity. “Is the theory of the big bang true?” For many physicists, the answer is undoubtedly yes. The Big Bang holds a central…

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The Lives of Alexander Grothendieck, a Mathematical Visionary

By Edward Frenkel Alexander Grothendieck, who died on Nov. 13 at the age of 86, was a visionary who captivated the collective psyche of his peers like no one else. To say he was the No….


Nondualism in Western Philosophy: a Series of Pointers (6/11)

This is a series of pointers to how the Western approach can assist with one’s self-inquiry. It is less a historical survey, and more a collection of Western views that might serve as tools for inquiry,…

Valerie Tirard

The Challenge of Relationships

by John J. Prendergast, Ph.D. Relationships tend to be the most challenging arena for spiritually-oriented people. We may be fine reading our spiritual books and being on retreat but what happens when we deal with a…

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Explore Contributors

  • Thomas Metzinger

    Thomas Metzinger

    Prof. Dr. Thomas Metzinger Director: Theoretical Philosophy Group Director:…

    Edward Frenkel

    Edward Frenkel

    Edward Frenkel is a professor of mathematics at the University…

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    Shawn Radcliffe

    Shawn Radcliffe is a science writer, yoga instructor and…


    Duane Elgin

    Duane Elgin M.A., M.B.A., is an internationally recognized author,…

  • contributor_Jessica-Graham

    Jessica Graham

    Jessica Graham teaches two weekly classes in Los Angeles, Eastside Mindfulness Meditation,…


    Maria Syldona

    Maria Syldona, Ph.D, is an Educator, Researcher and Clinician in…

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    Julia Mossbridge

    Cognitive Neuroscientist Julia Mossbridge examines how we integrate experiences…


    Subhash Kak

    Subhash Kak is Regents Professor in the School of…

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    Deborah Taj Anapol

    Deborah Taj Anapol, Ph.D. in Psychology (University of Washington,…


    Greg Goode

    Greg Goode is a long-time writer in the traditions…

  • contributor_Hans-Meijer

    Hans Meijer

    Hans Meijer (Dutch, 1944) is a mystic who became…


    Newcomb Greenleaf

    Newcomb Greenleaf was trained in mathematics, with a doctorate…

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