forall x is an introduction to sentential logic and first-order predicate logic with identity, logical systems that significantly influenced twentieth-century analytic philosophy. After working through the material in this book, a student should be able to understand most quantified expressions that arise in their philosophical reading.

This books treats symbolization, formal semantics, and proof theory for each language. The discussion of formal semantics is more direct than in many introductory texts. Although forall x does not contain proofs of soundness and completeness, it lays the groundwork for understanding why these are things that need to be proven.

This is an introductory textbook in logic and critical thinking. The goal of the textbook is to provide the reader with a set of tools and skills that will enable them to identify and evaluate arguments. The book is intended for an introductory course that covers both formal and informal logic. As such, it is not a formal logic textbook, but is closer to what one would find marketed as a critical thinking textbook. Downloadable as a pdf file.

We often make judgments about good and bad, right and wrong. Philosophical ethics is the critical examination of these and other concepts central to how we evaluate our own and each others’ behavior and choices.

This text examines some of the main threads of discussion on these topics that have developed over the last couple of millenia, mostly within the Western cultural tradition. It considers basic questions about moral and ethical judgment: Is there such a thing as something that is really right or really wrong independent of time, place and perspective? What is the relationship between religion and ethics? How can we reconcile self-interest and ethics? Is it ever acceptable to harm one person in order to help others? What do recent discussions in evolutionary biology or have to say about human moral systems? What is the relation between gender and ethics? The authors invite you to participate in their exploration of these and many other questions in philosophical ethics.

If you are adopting or adapting this book for a course, please let us know on our adoption form for the Introduction to Philosophy open textbook series: https://docs.google.com/forms/d/e/1FAIpQLSdwf2E7bRGvWefjhNZ07kgpgnNFxVxxp-iidPE5gfDBQNGBGg/viewform?usp=sf_link.

Introduction to Philosophy: Philosophy of Mind (edited by Heather Salazar) surveys the central themes in philosophy of mind and places them in a historical and contemporary context intended to engage first-time readers in the field. It focuses on debates about the status and character of the mind and its seemingly subjective nature in an apparently more objective world.

Written by experts and emerging researchers in their subject areas, each chapter brings clarity to complex material and involves the reader through a wealth of examples. Many chapters include applications of the concepts to film and literature that will stimulate readers to firmly grasp the significance of the philosophy of mind. Subjects covered are how the mind fits into the material world and how to analyze its properties. In that vein, substance dualism, materialism, behaviorism, functionalism, and property dualism are all explored.

In addition, it includes insightful contributions on how to explain seemingly subjective feelings, the mystery of consciousness, conceptual understanding of the world outside of the mind, and free will. The book is designed to be used alone or alongside a reader of historical and contemporary original sources.

If you are adopting or adapting this book for a course, please let us know on our adoption form for the Introduction to Philosophy open textbook series: https://docs.google.com/forms/d/e/1FAIpQLSdwf2E7bRGvWefjhNZ07kgpgnNFxVxxp-iidPE5gfDBQNGBGg/viewform?usp=sf_link.

Korean Through Folktales consists of four chapters and each centers on a famous Korean folktale. The lessons and values that famous folktales teach are embedded and permeated in various aspects of the Koran culture. Using folktales in the curriculum will provide an engaging way to expose students to a slice of the target culture that native Koreans are naturally exposed to at an early age. Through the selected folktales and various activities offered in the book, students can gain cultural knowledge and insights into traditional and cultural values while they are given linguistic lessons to reinforce their acquired skills and to apply the learned materials in an integrated approach.
Korean Through Folktales is designed to accompany 1st-year, 2nd-year, and 3rd-year Korean courses offered at Portland State University. However, any Korean teacher can adopt this book to supplement his/her course materials at elementary, intermediate, and advanced levels.
There are four chapters in the book. Each chapter will note main themes of a widely known folktale introduced in the chapter, followed by the links to several videos to watch and get a gist or a background of the story. The ensuing section will introduce important elements and symbolism embedded in the story so as to provide insights and to enhance the depth of appreciation. After that, three versions of the folktale are presented for different levels, followed by grammar lessons, exercises, and tasks.
Traces of folktales and allusions to them are evident in cultural products that many students enjoy, such as dramas, movies, and music. Therefore, knowledge in folktales will help students make cultural connections as well as enrich their experience of learning the Korean language.

Le Littéraire dans le quotidien is an open textbook for use in French courses. The Literary in the Everyday represents a new pedagogical approach to reading and writing at the lower levels and is applicable to all languages. Teachers of foreign languages besides French can read about the approach in the Teacher's Guide. Go to Google Drive for individual chapters. Additionally, the Foreign Languages & The Literary in the Everyday (FLLITE) Project, a joint initiative of COERLL and CERCLL, two national foreign language resource centers, offers open resources for professional development in the publication of CC licensed FLLITE lessons in any language. Go to the FLLITE website for the lesson archive.

Leyendas y arquetipos del Romanticismo español is an introduction to nineteenth-century Spanish literature with a thematic focus on legends and archetypes. It presents Romanticism in the context of nineteenth-century literary and social movements. It is designed as a first anthology for intermediate Spanish students at American universities. Although brief, it includes poetry, drama in verse and short story. The works have been selected for their literary interest and the social importance of their themes. They are all by canonical authors.

Liberté, by Gretchen Angelo, is a first-year college French textbook with a true communicative approach. It has been adopted by instructors at over thirty colleges and high schools (partial list below). The textbook may be downloaded for free in accordance with the license, or printed copies can be ordered. Please contact me for information on printed copies or requests for audio. Note that audio is available only to institutions adopting the text; I am sorry, but I do not currently supply them to homeschoolers or individual learners, as I simply get too many requests and cannot answer them all.

This book explores the philosophical views on the meaning of love. The text explores a variety of topics used to define love, including attraction, relationship satisfaction, emotional, and ethical considerations. The author takes a rational, logical, analytic, and scrutinizing look at experiences and other forms of literature on the subject of love.

Music Theory for the 21st–Century Classroom is an openly–licensed online four–semester college music theory textbook. This text differs from other music theory textbooks by focusing less on four–part (SATB) voiceleading and more on relating harmony to the phrase. Also, in traditional music theory textbooks, there is little emphasis on motivic analysis and analysis of melodic units smaller than the phrase. In my opinion, this led to students having difficulty with creating melodies, since the training they are given is typically to write a “melody” in quarter notes in the soprano voice of part writing exercises. When the assignments in those texts ask students to do more than this, the majority of the students struggle to create a melody with continuity and with appropriate placement of harmonies within a phrase because the text had not prepared them to do so.

The Open Logic Text is an open textbook on mathematical logic aimed at a non-mathematical audience, intended for advanced logic courses as taught in many philosophy departments. It is open-source: you can download the LaTeX code. It is open: you’re free to change it whichever way you like, and share your changes. It is collaborative: a team of people is working on it, using the GitHub platform, and we welcome contributions and feedback. And it is written with configurability in mind.

From Catullus to Horace, the tradition of Latin erotic poetry produced works of literature which are still read throughout the world. Ovid’s Amores, written in the first century BC, is arguably the best-known and most popular collection in this tradition.
Born in 43 BC, Ovid was educated in Rome in preparation for a career in public services before finding his calling as a poet. He may have begun writing his Amores as early as 25 BC. Although influenced by poets such as Catullus, Ovid demonstrates a much greater awareness of the funny side of love than any of his predecessors. The Amores is a collection of romantic poems centered on the poet’s own complicated love life: he is involved with a woman, Corinna, who is sometimes unobtainable, sometimes compliant, and often difficult and domineering. Whether as a literary trope, or perhaps merely as a human response to the problems of love in the real world, the principal focus of these poems is the poet himself, and his failures, foolishness, and delusions.
By the time he was in his forties, Ovid was Rome’s most important living poet; his Metamorphoses, a kaleidoscopic epic poem about love and hatred among the gods and mortals, is one of the most admired and influential books of all time. In AD 8, Ovid was exiled by Augustus to Romania, for reasons that remain obscure. He died there in AD 17.
The Amores were originally published in five books, but reissued around 1 AD in their current three-book form. This edition of the first book of the collection contains the complete Latin text of Book 1, along with commentary, notes and full vocabulary. Both entertaining and thought-provoking, this book will provide an invaluable aid to students of Latin and general readers alike.

This book contains embedded audio files of the original text read aloud by Aleksandra Szypowska.

This extract from Ovid's 'Theban History' recounts the confrontation of Pentheus, king of Thebes, with his divine cousin, Bacchus, the god of wine. Notwithstanding the warnings of the seer Tiresias and the cautionary tale of a character Acoetes (perhaps Bacchus in disguise), who tells of how the god once transformed a group of blasphemous sailors into dolphins, Pentheus refuses to acknowledge the divinity of Bacchus or allow his worship at Thebes. Enraged, yet curious to witness the orgiastic rites of the nascent cult, Pentheus conceals himself in a grove on Mt. Cithaeron near the locus of the ceremonies. But in the course of the rites he is spotted by the female participants who rush upon him in a delusional frenzy, his mother and sisters in the vanguard, and tear him limb from limb.
The episode abounds in themes of abiding interest, not least the clash between the authoritarian personality of Pentheus, who embodies 'law and order', masculine prowess, and the martial ethos of his city, and Bacchus, a somewhat effeminate god of orgiastic excess, who revels in the delusional and the deceptive, the transgression of boundaries, and the blurring of gender distinctions.
This course book offers a wide-ranging introduction, the original Latin text, study aids with vocabulary, and an extensive commentary. Designed to stretch and stimulate readers, Gildenhard and Zissos's incisive commentary will be of particular interest to students of Latin at AS and undergraduate level. It extends beyond detailed linguistic analysis to encourage critical engagement with Ovid's poetry and discussion of the most recent scholarly thought.

The goal of this project is to provide high-quality, accessible primary sources to those teaching and studying the histories and cultures of the Spanish-speaking world and the indigenous peoples of Latin America. Our modules cover a wide range of topics, but all consist of the same essential parts:

This textbook is designed for students who have intermediate competency in Japanese, roughly at Level 2 on the ILR (The Interagency Language Roundtable) proficiency scale, and are working on reaching Level 3.
This textbook can be used for self-study, as part of online course, and in a traditional classroom setting. It is comprised of four chapters, intended to be covered in one term of a quarter system.