It’s nearly 50 years ago that my book of conceptual instructions Grapefruit was first published. In these pages I’m picking up where I left off. After each day of sharing the instructions you should feel free to question, discuss and/or report what your mind tells you. I’m just planting the seeds. Have fun. —Yoko Ono, from the introduction to Acorn In Acorn, renowned artist and political activist Yoko Ono offers intriguing, enchanting exercises to open our eyes on better ways of relating to ourselves, each other, and the planet we co-habit. Throughout the book are drawings by Yoko, many never before seen.