"The Book" by Alan Watts. I read it in the 70s and my concept of God became wider and deeper. Earlier, when I was 12, I would read the essays in the magazine section of the Milw. Journal which were actually taken from the book, "The Art of Living" by Wilfred Peterson. The essays now are not as appealing to me as much as before because they are a bit dated, but they left an indelible impression on me and directed my moral compass. There were wonderful quotes in each essay. For example, in the essay, "The Art of Giving," Perterson writes: 'Emerson said it well, "Rings and jewels are not gifts, but apologies for gifts. The only true gift is a gift of thyself to others.'" I used to almost memorize each essay. (You can get used copies of that book in paperback, but the pages will be yellowed with age:) I do believe those two books influenced my thinking dramatically.