Boshan was a relevant Zen master of the Ming dynasty in China. In the Exhortations he focuses on the importance and inevitability of great doubt, considering it fundamental in Zen practice. In his text, he gives useful advice to practitioners, pointing out common mistakes, as well as clear guidance on how to avoid them. The teacher writes in a direct style and encourages the reader to delve deeper into his practice, which, done genuinely, will raise doubt and, through it, achieve the great awakening. Jeff Shore enriches Boshan's text with comments that shed light on his writings, contextualizing them and demonstrating that the essence of the Zen tradition is still alive. The great doubt is at the core of the Zen tradition and this book will be of great use to practitioners of all schools.