The Science of the Buddha – 21-Day Retreat (2012)

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From the Living Gems Curation Team

This collection gathers the complete Dharma talks from the 2012 21-Day Retreat, The Science of the Buddha, offered by Zen Master Thich Nhat Hanh in Plum Village.

In this extended retreat, Thay explores the meeting point between Buddhist insight and contemporary scientific inquiry. Drawing on the Sutra on the Full Awareness of Breathing, the Four Noble Truths, the Noble Eightfold Path, and classical Buddhist psychology, he presents the Buddha’s teachings as a rigorous and experiential science of mind.

Themes throughout the retreat include the nature of consciousness, the relationship between observer and observed, the distinction between conventional and ultimate truth, and the insight of interbeing. Through dialogue with modern science and careful examination of perception, time, matter, and cognition, Thay invites practitioners to investigate reality directly rather than rely on fixed notions or inherited views.

At the same time, the retreat remains grounded in daily practice: mindful breathing, walking meditation, the cultivation of the Three Energies of Mindfulness, Concentration, and Insight, and the building of Sangha. Insight is not presented as abstract philosophy, but as a lived experience accessible in each step and each breath.

These talks preserve a profound exploration of the Buddha’s teaching as both contemplative wisdom and living science — a path of inquiry leading to freedom from discrimination, fear, and misunderstanding.

Explore the full 21-day retreat on Living Gems.

Last update February 19, 2026
Thich Nhat Hanh June 4, 2012 English

Foundation of Mindfulness - Non-Dualistic View

June 4, 2012. 185-minute dharma talk by Thich Nhat Hanh from Upper Hamlet in Plum Village during the 21-Day Retreat with the theme The Science of the Buddha. The talk is given in English and this is the third dharma talk (of 15). We begin with 10-minutes of chanting followed by the main dharma talk by Thay. After some mindful movements, we continue with University of Virginia Astrophysicist Professor Trinh Xuan Thuan interviewing Thay.

Topics of the Talk:
Obstacles of Buddhist Practice - Knowledge, Afflictions
Four Foundations of Mindfulness - Body, Feelings, Mind (51 mental formations), Objects of Mind (‘nature’ for the scientist)
From the objects of mind we have “double grasping” and the “perceived and perceiver” - entanglement.
Two Realities - Ultimate, Historical
A=A≠B (science), A≠A=A (Buddhism)

Interview:
Question 1: Buddhism says that one has to get rid of all previous knowledge, to have a clear mind. I think in science one has to know things that were done before, but keep a clear and open mind. Does Thay agree with this?
Question 2: You said something about inanimate matter has intelligence. I’m not sure this is the current scientific view now. Even if you claim that an electron has consciousness, then I say that we have to say there are varying degrees of consciousness. I would say that an electron is very different from a human being. An electron has mass, its electric charge, and its spin, that’s it. Once you’ve seen an electron, you’ve seen them all. Also, a flower. Chimpanzees have some human notion, so close to us in genes. I think there are different degrees of consciousness, and we cannot put everything on the same level. What is your response to that?
Question 3: What is the concept of time in Buddhism? We have the impression that time passes, from the past to the present to the future. In science we learn that past, present and future are always there, and time is not the same for everyone, depending on the movement of the observer. Although there is a psychological time that seems to be there. That is the physical conception of time. So what is the Buddhist concept of time?
Question 4: I like Buddhism not only because I was raised in it, but because it is very logical. It has the spirit of experimentation that a scientist would accept. The mind is the instrument. Objective and subjective reality, that’s something true. As a scientist I realize that an observer is very important as part of what he sees. If you say that there is no objective reality independent of the mind, do you think, for example, that if you do not look at the moon, the moon does not exist? Do you really believe that an alternate universe without consciousness would not exist, if no one could be conscious of it?

Note: this description was automatically sourced from existing YouTube descriptions and other sources. Please ‘Suggest Edit’ if it’s incorrect.

Thich Nhat Hanh, Sangha Member June 7, 2012 English

Questions and Answers

June 7, 2012. 99-minute dharma talk by Thich Nhat Hanh from New Hamlet in Plum Village during the 21-Day Retreat with the theme The Science of the Buddha. The talk is given in English and this is the fifth dharma talk (of 15). This is an excellent session of questions and answers.

Questions:

  • What is the difference between feelings and mental formations?
  • Is euthanasia okay? Is it Right Action? Can we relieve physical pain?
  • How do I practice with the teaching of inferiority and equality complexes?
  • How can we support our dharma teacher when they are not so skillful?
  • How do I practice with the last four exercises from the sutra on the full awareness of breathing?
  • Question on consciousness and impermanence.
  • What happens to the mind after the body dies?
  • How can you take refuge in the sangha if you don’t trust? How can we build trust?
  • Severe mental illness, such as bipolar, requires medicine to balance emotion. Can you clarify this as it relates to the practice?

The session includes contemplations before chanting, the Heart of Perfect Understanding, and an introduction to the questions and answers session. Specific questions address feelings and mental formations, the ethics of euthanasia in cases of severe pain, understanding and practicing with the teachings on inferiority and equality complexes, supporting a local dharma teacher, reconciling the impermanence of consciousness with traumatic experiences, the possibility of the mind existing without the body, building trust within the sangha, and the relationship between strong emotions, meditation, and medical treatment for severe mental disorders.

Note: this description was automatically sourced from existing YouTube descriptions and other sources. Please ‘Suggest Edit’ if it’s incorrect.

Thich Nhat Hanh June 10, 2012 English

Non-Locality Teaching

Thầy explores the organic, inseparable nature of suffering and happiness, illustrating that just as a lotus requires the mud to bloom, true well-being cannot exist without an understanding of ill-being. He reframes the Four Noble Truths through this lens of interbeing, explaining that touching our own suffering is the only way to generate the deep compassion and insight required for true love. Thầy details how to use the Fourth Mindfulness Training—incorporating loving speech and compassionate listening—to restore broken communication and heal generational trauma within families.

Delving into Buddhist psychology, Thầy challenges the conventional illusion of a separate self by explaining that while action, thinking, and perception exist, there is no separate actor, thinker, or perceiver behind them. He connects this ancient scriptural insight to the modern scientific principle of non-locality, demonstrating that just like an electron or a flower, our true nature is not confined within our skin but is completely empty of a separate self-nature (svabhāva).

Concluding with rich imagery from the Lotus Sutra and Avataṃsaka Sūtra, Thầy invokes the cosmic manifestations of Śākyamuni Buddha and Queen Māyā to remind us that we are not limited by time or space. Reflecting on Queen Māyā’s realization that she “contains multitudes,” Thầy shows that we, too, hold the entire universe and countless buddhas within ourselves. By touching this ultimate dimension of inner vastness, we can transcend all fear, birth, and death.

This is the sixth talk in a series of thirteen given during The Science of the Buddha, twenty-one-day retreat in the year 2012. Thay offered this talk at the Lower Hamlet, Plum Village, France.

Thich Nhat Hanh June 12, 2012 English

Our Children's Flesh

Thầy explore the Seven Factors of Enlightenment, emphasizing that deep insight requires a foundation of relaxation and joy. He introduces the vital practice of the separate investigation of the phenomenal (lakṣaṇa) and noumenal (nature) realms—to clarify the relationship between conventional and ultimate truths. Using this framework, Thầy corrects a common scriptural misunderstanding: he explains that all Four Noble Truths must be understood as conditioned (saṃskṛta) and impermanent within the conventional dimension. However, by looking deeply into these conventional realities—just as a wave touches her true nature as water—we directly encounter the ultimate dimension, which is entirely free from the notions of birth, death, being, and non-being.

Turning to the Second Noble Truth, Thầy explains how suffering arises and persists through the intake of unwholesome food, framing the practice of the Fifth Mindfulness Training around the Buddha’s teaching on the Four Nutriments. Drawing from the Sutra on the Son’s Flesh, he unpacks the four types of nutriment: edible foods, sensory impressions, volition, and collective consciousness. Thầy illustrates the highly toxic nature of unmindful sensory consumption by sharing his advice to an editor at the Times of India on how to report devastating news without watering seeds of despair and anger in society.

Finally, Thầy highlights the urgent need to protect ourselves and future generations from psychological toxins through mindful consumption. He shares the classic story of the mother of Mencius (Meng Zi) to demonstrate the power of choosing a wholesome collective environment. To bring these healing practices into the mainstream, Thầy calls upon educators and writers to help “train the trainers” and adapt the Five Mindfulness Trainings into secular manuals for schools worldwide.

This is the seventh talk in a series of thirteen given during The Science of the Buddha, twenty-one-day retreat in the year 2012. Thay offered this talk at the Upper Hamlet, Plum Village, France.

Thich Nhat Hanh June 14, 2012 English

Buddha, Dharma, and Sangha Bodies

Thay discusses the importance of mindfulness in daily life and that every breath, every step can bring us joy and happiness. Mindfulness, concentration, insight, are three kinds of energies that we cultivate in our practice, that can bring joy and peace in every moment and help us transform suffering.

Thay tells the story of the Buddha visiting the monk Vakkali, who is dying. The story illustrates the concept of the Dharma body. Thay then teaches about the Four Recollections and the Four Bodies- the Buddha body, the Dharma body, the Sangha body and the Mindfulness Training body. We practice to cultivate and nuture these Four Bodies within us. He relates how the Four Bodies are interconnected and that a true Sangha– a living Sangha, has the living Dharma and the living Buddha within it.

“Every one of us is a cell of the Sangha body. And we know that the Sangha body carries within herself the Buddha body. So if the Sangha is a true Sangha, the Buddha is in the Sangha. And while you are a cell of the Sangha body, you are at the same time a cell of the Buddha body. It’s wonderful to be a cell in the body of the Buddha. And actually you are one. Every one of us is one cell in the Buddha body. Why do you have to go and look for the Buddha elsewhere? You are already one cell in the Buddha body. Rejoice.”

This is the ninth talk in a series of thirteen given during The Science of the Buddha, twenty-one-day retreat in the year 2012. Thay offered this talk at the Upper Hamlet, Plum Village, France.