The Zen school of Mahayana Buddhism contends that each one of us is already a Buddha -- the enlightenment we seek is always within us, waiting to be realized through mindfulness and concerted spiritual work. This truth pushes us toward practice, in the hopes that we may awaken our potential and live up to what is inside us. This is a notion taught widely by ninth century Zen Master Lin Chi, and in his tradition Thich Nhat Hanh employs the teachings and writings of Mahayana Buddhism to discuss specific topics in Buddhist study and practice. With these teachings, readers have the tools to awaken the Buddha within.