•  114
    The Collapse of a Life Framework and Bernard Williams’s Ground Projects
    Journal of Philosophy of Life 16 (1): 1-18. 2026.
    Bernard Williams argues that ground projects give meaning to a person’s life and furnish her with reasons for living. However, a question arises: what happens when these ground projects collapse? Does meaning in life disappear, or can it still persist? Williams says little about this issue. In this paper, I argue that, in some cases, after the collapse of ground projects, we can experience the emergence of a joy of being alive (“the joy of life”) even amid dark and desperate situations. There ar…Read more
  •  16
    The Paradox of Sentiocentric Antinatalism: The Obligation of Extinction or the Obligation of Survival?
    Cambridge Quarterly of Healthcare Ethics 34 (4): 634-645. 2025.
    This paper explores sentiocentric antinatalism, which is based on two principles: (1) prevention of the emergence of pain and (2) antispeciesism. It argues that the notion that all sentient creatures, including humans, should not be born presents an unsolvable paradox; the paradox is that the antinatalists who attempt to eliminate all births of sentient creatures must bear the obligation to survive for the purpose of preventing the emergence of all other creatures in this world. There are four p…Read more
  •  2
    Commentary
    In Akira Akabayashi (ed.), The Future of Bioethics: International Dialogues, Oxford University Press. pp. 120-125. 2014.
    Moral bioenhancement is an enhancement of morality by genetic or other biological means. These include pharmacological means as well as transcranial magnetic stimulation, deep-brain stimulation, genetic manipulation, and targeted optic stimulation. Julian Savulescu and colleagues have recently advocated that moral bioenhancement ought to be forced on all of us, but in this paper the author argues that compulsory moral bioenhancement is impossible and that if societal improvement is desired, impr…Read more
  •  68
    In this paper I introduce two phenomenological ideas, affordance and enaction, to the philosophical discussion of meaning in life. I further analyse how our attitude or commitment to life is related to our experience of meaningfulness in life. In times of hardship, if a person is determined to survive, her life may appear somewhat hopeful, but if she sinks into the depths of despair, her life may appear insignificant and worthless. This shows that one’s lived experience of the worthfulness of li…Read more
  •  475
    This is the translation of a 1996 Japanese bestseller that addresses terrorism from the viewpoints of philosophy and the meaning of life. I do not believe in a religion, but I cannot acquire the meaning of life through science. How can I live in a post-religious age? In the spring of 1995, the Aum cult released a chemical weapon in the Tokyo subway system, killing and injuring many people. The incident shocked society because there were many young scientists from elite universities among the cul…Read more
  •  830
    Pleasure, Suffering, and Painless Civilization
    The Review of Life Studies 13 1-9. 2022.
    Beyza Şen and Ali Tacar's interview with Masahiro Morioka on painless civilization and his recent works. "In our contemporary civilization we can experience pleasure, pleasantness, and comfort, and can avoid pain and suffering, albeit at the sacrifice of joy of life, which is indispensable for acquiring our life without regret. Of course we have a lot of pain and suffering in our society, so our lives are not painless at all, but I cannot help feeling that our contemporary scientific civilizatio…Read more
  • Imagining a Common Horizon for Humanity and the Planet (edited book)
    Cappadocia University Press. 2023.
  •  33
    現代における重要テーマをめぐって重ねてきた言葉たちを結晶化した対談集。対談者:戸谷洋志、小松原織香、山口尚、永井玲衣.
  •  584
    This book is a collection of all the papers published in the special issue “Philosophy and Meaning in Life Vol.4: Selected Papers from the Pretoria Conference,” Journal of Philosophy of Life, Vol.12, No.1, 2022, pp.1-115. Theorizing About Meaning in Life Cheshire Calhoun Is It Possible to Say ‘Yes’ to Traumatic Experiences?: A Philosophical Approach to Human Suffering Masahiro Morioka Why Beauvoir Is Not a Subjectivist about Meaning in Life Kiki Berk Axiological Values Grounded in Basic Motivat…Read more
  •  573
    This book is a collection of all the papers published in the special issue "Philosophy and Meaning in Life Vol. 5: Selected Papers from the Tohoku Conference," Journal of Philosophy of Life Vol. 14 , No.1, 2024 , 1-53 . Perfectionism and Vulgarianism About a Meaningful Life David Matheson What’s the Point If We’re All Going to Die?: Pessimism, Moderation, and the Reality of the Past Matthew Pianalto Meaning in Life in the Context of Psychopathology and Personal Recovery Bernice Brijan
  •  4236
    This book is a collection of essays on the philosophy of life’s meaning in contemporary society. Topics range from antinatalism, meaning of life, the trolley problem, to painless civilization. I am now writing a comprehensive philosophy book on those topics, but it will take several years to complete; hence, I decided to make a handy book to provide readers with an outline of the philosophical approaches to the meaning of life that I have in mind. Chapter One discusses the definition, history, a…Read more
  •  1098
    Painless civilization is a term I coined in my Japanese book of the same title, which was published in 2003. Contemporary civilization aims to provide pleasure and comfort and eliminate pain and suffering as much as possible. This is especially evident in advanced countries. Contemporary civilization is moving toward a painless civilization. However, in a painless civilization, we are deprived of the joy of life, which is considered a fundamental source of meaning in life, and we are led toward …Read more
  •  727
    We sometimes feel the presence of a person-like something on a non-biological object, such as a memento from a deceased family member or a well-engineered, human-shaped robot. This feeling—the sense of someone appearing there—has not been extensively investigated by philosophers. In this paper, I employ examples from previous studies, my own experiences, and thought experiments to conduct a philosophical analysis of the mechanism of the emergence of this person-like something by using the concep…Read more
  •  652
    This is the English translation of Chapters Two and Three of Painless Civilization, which was published in Japanese in 2003. In this volume, I examine the problems of painless civilization from the perspective of philosophical psychology and ethics. I discuss how the essence of love is transformed in a society moving toward painlessness and how the painless stream penetrates each of us and makes us living corpses. In order to tackle the problems of painless civilization, we must look inside our …Read more
  •  1133
    In this paper, I provide an overview of today’s philosophical approaches to the problem of “intelligence” in the field of artificial intelligence by examining several important papers on phenomenology and the philosophy of biology such as those on Heideggerian AI, Jonas's metabolism model, and slime mold type intelligence.
  •  2741
    Artificial Intelligence, Robots, and Philosophy
    with Shin-Ichiro Inaba, Makoto Kureha, István Zoltán Zárdai, Minao Kukita, Shimpei Okamoto, Yuko Murakami, and Rossa Ó Muireartaigh
    Journal of Philosophy of Life. 2023.
    This book is a collection of all the papers published in the special issue “Artificial Intelligence, Robots, and Philosophy,” Journal of Philosophy of Life, Vol.13, No.1, 2023, pp.1-146. The authors discuss a variety of topics such as science fiction and space ethics, the philosophy of artificial intelligence, the ethics of autonomous agents, and virtuous robots. Through their discussions, readers are able to think deeply about the essence of modern technology and the future of humanity. All pap…Read more
  •  34
    "Watakushi" o meguru taiketsu: dokuzaisei o tetsugakusuru (edited book)
    with Hitoshi Nagai
    Akashi Shoten. 2021.
    現代の哲学界にあって、全く独自のアプローチを積み上げてきた永井均。永井哲学の最重要キーワードでもある「“私”」について、永井自身と森岡正博が哲学する。“私”、すなわち、「いまここに現にひとりだけ特殊な形で存在している、私の特別なあり方」は決して普遍化できないはずだが、ひとたびそれを語ってしまうと、他者にも適用できる単なる「私」の話となり、本当に言いたかった特別さは消えてしまう。どうすれば私たちは私だけがもつその特別さに近づくことができるだろうか?―独在性の解釈をめぐって、永井と森岡は徐々にすれ違いを見せていく。2人の議論の「噛み合わなさ」から浮かび上がってくる“私”の真相とは?この世の最大の謎、“私”をめぐって繰り広げられるオリジナルでスリリングな知的冒険。
  •  778
    Hermitism and Impermanence: A Response to Nagasawa’s Argument on Transcendentalism in Medieval Japan
    European Journal for Philosophy of Religion 14 (3): 239-246. 2022.
    In this review, I argue that Chōmei’s hermitism can be another realistic strategy to respond to Nagasawa's argument that only transcendentalism can constitute a potentially successful response to the problem of impermanence. Chōmei lived in a small house in the remote mountains and interacted with the surrounding nature. His lifestyle is considered a good example of reconciling one’s finite life with the impermanence of the world and human sufferings. I conclude that Nagasawa’s interpretation of…Read more
  •  604
    People who have encountered a tragic event and suffered from traumatic experiences can sometimes achieve, in their later lives, an affirmation of having been born to such devastating lives. But what does this “affirmation” exactly mean in such cases? In this paper, I investigate this problem from the viewpoint of philosophy of life’s meaning. Firstly, I distinguish among three types of affirmations: the affirmation of survival, the affirmation of having had traumatic experiences, and the affirma…Read more
  •  655
    What Does Doing Philosophy Mean to Me?
    The Review of Life Studies 13 35-46. 2022.
    To me, philosophy is the relentless pursuit of 1) how I am to live and die from this moment forward and 2) the meaning of my having been born. This pursuit does not stop until I reach an understanding that satisfies me. If I expand my field of view slightly, it is to understand where humanity came from and where it is going through an intellectual lens. When I entered the ethics program at the University of Tokyo, I thought I could do this sort of thing at a university. This expectation, however…Read more
  •  883
    In this paper I attempt to open a new horizon in the field of civilization studies by examining the concept of painless civilization from the perspective of the philosophy of biological evolution. Since the space is limited, the priority will be given to the clarification of an overall structure. Modern civilization has created systems that seek “comfort and pleasure” and eliminate “pain and suffering” and has spread them to every corner of our society. It is progressing like a great wave in man…Read more
  •  575
    The Cruelty of Living in a Painless Civilization
    The Review of Life Studies 13 10-11. 2022.
    Our society has moved in the direction of eliminating pain, suffering, and discomfort. At first glance, this may seem like a good thing, but I believe that the meaning of life is being increasingly lost in the process.
  •  569
    This paper discusses some philosophical problems lurking behind the issues of human biotechnology, particularly prenatal screening. Firstly, prenatal screening technology disempowers existing disabled people. The second problem is that it systematically deprives us of the “fundamental sense of security.” This is a sense of security that allows us to believe that we will never be looked upon by anyone with such unspoken words as, “I wish you were never born” or “I wish you would disappear from th…Read more
  •  50
    Le principe d'intégrité comme droit naturel
    Diogène 3 140-157. 2010.
  •  1030
    Manga Introduction to Philosophy Ch.4 "What Is Life?" Part 2
    with Nyancofu Terada
    Tokyo Philosophy Project. 2021.
    This book was first published in Japanese in 2013 and was warmly welcomed not only by general readers but also by specialists in philosophy. I believe that it succeeded in breaking new ground in the field of introductory approaches to philosophy. Many manga or comic books explaining the thought of major philosophers have already been published. There have also been manga whose story was conceived by philosophers. To the best of my knowledge, however, there has never been a book in which a philos…Read more
  •  1095
    Manga Introduction to Philosophy Ch.4 "What Is Life?" Part 1
    with Nyancofu Terada
    Tokyo Philosophy Project. 2021.
    This book was first published in Japanese in 2013 and was warmly welcomed not only by general readers but also by specialists in philosophy. I believe that it succeeded in breaking new ground in the field of introductory approaches to philosophy. Many manga or comic books explaining the thought of major philosophers have already been published. There have also been manga whose story was conceived by philosophers. To the best of my knowledge, however, there has never been a book in which a philos…Read more
  •  1825
    Manga Introduction to Philosophy Ch.3 "What Is 'I'?" Part 2
    with Nyancofu Terada
    Tokyo Philosophy Project. 2021.
    This book was first published in Japanese in 2013 and was warmly welcomed not only by general readers but also by specialists in philosophy. I believe that it succeeded in breaking new ground in the field of introductory approaches to philosophy. Many manga or comic books explaining the thought of major philosophers have already been published. There have also been manga whose story was conceived by philosophers. To the best of my knowledge, however, there has never been a book in which a philos…Read more
  •  2823
    Manga Introduction to Philosophy Ch.3 "What Is 'I'?" Part 1
    with Nyancofu Terada
    Tokyo Philosophy Project. 2021.
    This book was first published in Japanese in 2013 and was warmly welcomed not only by general readers but also by specialists in philosophy. I believe that it succeeded in breaking new ground in the field of introductory approaches to philosophy. Many manga or comic books explaining the thought of major philosophers have already been published. There have also been manga whose story was conceived by philosophers. To the best of my knowledge, however, there has never been a book in which a philos…Read more
  •  870
    This book was first published in Japanese in 2013 and was warmly welcomed not only by general readers but also by specialists in philosophy. I believe that it succeeded in breaking new ground in the field of introductory approaches to philosophy. Many manga or comic books explaining the thought of major philosophers have already been published. There have also been manga whose story was conceived by philosophers. To the best of my knowledge, however, there has never been a book in which a philos…Read more