“If you have the insight of non-self, if you have the insight of impermanence, you should make that insight into a concentration that you keep alive throughout the day. Then what you say, what you think, and what you do will then be in the light of that wisdom and you will avoid making mistakes and creating suffering.”

Vietnamese Thiền Buddhist monk

Thích Nhất Hạnh was a Vietnamese Thiền Buddhist monk, peace activist, author, poet, and teacher. He was widely known as the "father of mindfulness" and for founding the Plum Village Tradition, which is recognized as the main inspiration for engaged Buddhism. He became a major influence on how Buddhism was practiced in the West. His work and teaching were closely tied to mindfulness and engaged Buddhism, and his reputation rested on both his writing and his role as a Buddhist teacher.