This book celebrates the 70th anniversary of the publication of Ludwig Wittgenstein’s Philosophical Investigations by discussing the legacy of this seminal work and its enduring contributions to many areas of human practice such as artistic, scientific, and religious studies closely related to philosophical analyses. Chapters in this contributed volume reassess the debates around the Philosophical Investigations by discussing the different interpretations of Wittgenstein’s late philosophy, especially the idea that philosophical investigations are grammatical ones. 

To achieve this goal, authors in this volume look not only at the contributions in Wittgenstein’s “pure philosophy” (e.g., the development of new methodological tools), but also his impact on sciences such as mathematics, psychology, medicine, law, anthropology etc.; arts such as music and literature; religious studies etc. Authors were invited to illustrate in different domains the applications of the grammatical therapeutic approach to philosophy showing how we can dissolve metaphysical problems in each area of human activity to reach complete clarity. Only then grammatical therapy is successful, that is, “cures” the disorders of metaphysics bringing tranquility to our thoughts and a “healthy” understanding of the workings of language. 

Philosophy as Grammatical Therapy: Celebrating the 70th Anniversary of Wittgenstein’s Philosophical Investigations will be of interest to researchers interested in the work of Ludwig Wittgenstein from different fields within philosophy, such as philosophy of language, philosophy of science, philosophy of art, philosophy of law, philosophy of religion and philosophical anthropology.  

Darlei Dall’Agnol is Full Professor in the Department of Philosophy at the Federal University of Santa Catarina (UFSC), Brazil. He holds a Bachelor's degree and a Specialization in Philosophy from the University of Caxias do Sul (UCS), Brazil, where he also worked as a professor (1987-1993). He completed a Master's in Philosophy at Federal University of Rio Grande do Sul, Brazil, and a PhD in Philosophy at the University of Bristol, England, with work in the field of ethics. He did a post-doctorate in metaethics at the University of Michigan in Ann Arbor, US, where he began developing a new moral epistemology, namely, practical cognitivism, and in bioethics at the Centre for Practical Ethics at the University of Oxford, UK, where he applied it to practical ethics issues, elucidating the implications of respectful care. He was head of the Departments of Philosophy at UCS and UFSC and Coordinator of Néfipo – the Nucleus of Ethics and Political Philosophy at UFSC. He also served as Coordinator of the Graduate Program in Philosophy (Master's and Doctorate) at UFSC from 2008 to 2012. He founded and was the first editor of the journals Conjectura and Ethic@ and currently coordinates the Ethica Series by EdUFSC, with 18 volumes published in different domains of ethics. 

Léo Peruzzo Júnior is a Post-Doctorate researcher at Università Ca' Foscari, Venice (Visiting Scholar) and a Professor of the Graduate Program in Philosophy, Master's and Doctorate at the Pontifical Catholic University of Paraná (PUCPR), at the Franciscan University Center of Paraná (UNIFAE/PR), and at the Vicentian College (FAVI), all in Brazil. He holds a PhD in Philosophy from the Federal University of Santa Catarina (UFSC), Brazil, and Bachelor's and Master's degrees in Philosophy from the Pontifical Catholic University of Paraná (PUCPR) and Bachelor of Laws from the Santa Cruz University Center (UNISANTACRUZ), Brazil. Editor-in-Chief of the Aurora Journal of Philosophy. In addition to Brazil, he has given lectures in Spain (University of Extremadura), Portugal (University of Covilhã), Italy (Università Ca' Foscari; Università La Sapienza; Università degli Studi di Bari Aldo Moro), Colombia (University of Valle), South Korea (Seoul National University), Mexico (Autonomous University of Puebla), Peru (Pontifical Catholic University of Peru), East Timor (National University of Timor Lorosae; Dom Jaime Goulart Institute), and Argentina (National University of Tucumán). He is a member of the British Wittgenstein Society and the Brazilian Society of Analytical Philosophy. He is also a member of the Research Groups Mind, Language, and Society (CNPq), Conflict Solutions (Law, CNPq), and Philosophical Investigations on Transhumanism and Human Enhancement (GIFT-H+) at Fundação Oswaldo Cruz - FIOCRUZ (CNPq). He is a member of ANPOF (National Association for Research in Graduate Philosophy) and CONPEDI (National Council for Research and Graduate Studies in Law).