The best philosophy books to read before you turn 25 (or after!)

"A delightful book … I should like to have written it myself." — Bertrand Russell
First published in 1936, this first full-length presentation in English of the Logical Positivism of Carnap, Neurath, and others has gone through many printings to become a classic of thought and communication. It not only surveys one of the most important areas of modern thought; it also shows the confusion that arises from imperfect understanding of the uses of language. A first-rate antidote for fuzzy thought and muddled writing, this remarkable book has helped philosophers, writers, speakers, teachers, students, and general readers alike.
Mr. Ayers… show more.

Incorporating significant editorial changes from earlier editions, the fourth edition of Ludwig Wittgenstein's Philosophical Investigations is the definitive en face German-English version of the most important work of 20th-century philosophy The extensively revised English translation incorporates many hundreds of changes to Anscombe's original translation Footnoted remarks in the earlier editions have now been relocated in the text What was previously referred to as 'Part 2' is now republished as Philosophy of Psychology - A Fragment , and all the remarks in it are numbered for ease of reference New detailed editorial endnotes explain decisions of translators and identify references and… show more.

This book challenges, with several powerful arguments, some of our deepest beliefs about rationality, morality, and personal identity. The author claims that we have a false view of our own nature; that it is often rational to act against our own best interests; that most of us have moral views that are directly self-defeating; and that, when we consider future generations the conclusions will often be disturbing. He concludes that moral non-religious moral
philosophy is a young subject, with a promising but unpredictable future.

For thirty years, Peter Singer's Practical Ethics has been the classic introduction to applied ethics. For this third edition, the author has revised and updated all the chapters and added a new chapter addressing climate change, one of the most important ethical challenges of our generation. Some of the questions discussed in this book concern our daily lives. Is it ethical to buy luxuries when others do not have enough to eat? Should we buy meat from intensively reared animals? Am I doing something wrong if my carbon footprint is above the global average? Other questions confront us as concerned… show more.

Much philosophical debate has attempted to reconcile the human capacity to view the world both objectively and subjectively. Thomas Nagel's ambitious and lively book tackles this fundamental issue, arguing that our divided nature is the root of a whole range of philosophical problems, touching, as it does, every aspect of human life. He deals with its manifestations in such fields of philosophy as the mind-body problem, personal identity, knowledge and scepticism,
thought and reality, free will, and ethics.
From reviews of the hardback:

`Remarkable ... all of his discussions are clear and insightful, but some reach a level of originality… show more.