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 OnoLegendary avant-garde icon Yoko Ono has inspired generations of artists and performers. In Acorn, she offers enchanting and thought-provoking exercises that open our eyes-and all of our senses - to more creative and mindful ways of relating to ourselves, each other, and the planet we cohabit. Throughout this beautifully designed book are 100 black-and-white line drawings by Yoko. Like this legendary woman herself, the book is wildly original, stimulating, and hard to label: call it purposeful play, call it brain poetry, call it guided motivation, call it Zen-like incantations, call it whatever you want. But read it. Acorn may change the way you experience the world.