Elaborate on the chapters throughout the book, The Sun My Heart, especially emphasizing Thich Nhat Hanh's ecological teachings. Make sure to utilize quotations from the book, citing page numbers.

1) Outline the chapters in "The Sun My Heart", especially emphasizing Thich Nhat Hanh’s ecological teachings. 
2) This is the PDF file of the book. 
https://hoavouu.com/images/file/okBMgmAx0QgQAMx-/sun-my-heart-thich-nhat-hanh.pdf