What are the motifs in The Heart of the Buddha's Teaching by Thich Nhat Hanh?

Suffering as a means to liberation is a recurring idea in the book. Hanh believes that the way out of suffering is through suffering. Using Buddhist teachings, he encourages us to look deeply at our suffering to gain an understanding of its roots, being careful not to avoid ir or ignore it. Once we understand the basis of the suffering, we can embrace it with love and compassion.