In the book, Language in Thought and Action 5th edition, by S.I and Alan Hayakawa, what are the main principles? I have a few already:

1)Cooperation is essential in order to have a society.
2)Words aren't the only thing associated with language: tone of voice, rhythm, and expressions are key features of language, too.
3)Context is always needed in order to understand a person's choice of words.
Are those principles any good? And if there are more important principles, I'd be really happy to hear them. Thanks for the help!

I'm not familiar with this book, but this review may help you.

http://homepages.ulb.ac.be/~jpvannop/HAYA.html

Thank you, Ms. Sue. The site was very helpful.

You're very welcome.

To determine the main principles in the book "Language in Thought and Action," authored by S.I. and Alan Hayakawa, you can follow these steps:

1. Start by finding a reputable source for the book, such as an official website, an academic database, or a library catalog. Check the information provided about the book, including the introduction, table of contents, or summaries if available.

2. Look for specific sections or chapters that outline the main principles or key concepts in the book. This may include a section on the authors' philosophy or the purpose of the book. Scan through these sections to identify any principles explicitly mentioned.

3. If you don't find a clear list of principles in the book itself, you can refer to external sources such as book reviews, scholarly articles, or summaries written by experts or scholars. These sources often highlight the main themes or principles discussed in the book.

4. Additionally, you can consult academic literature or scholarly discussions on the topic of language and communication to identify broader principles that are commonly associated with the study of language and thought.

Regarding the principles you have listed, they are indeed valid and align with general understandings about language and communication. However, it's important to note that the main principles may vary depending on the author's specific focus or the context of the book.

To get a comprehensive understanding of the main principles in "Language in Thought and Action," it is recommended to consult the book itself or seek authoritative reviews and commentaries on the work.