Thích Nhất Hạnh
Thích Nhất Hạnh was a zen buddhist Vietnamese monk who becamse famous after Martin Luther King Jr nominated him for the Nobel peace price for his effort to promote peace in war torn Vietnam. He is also the founder of Plum Village, as well as the author of many books on Mindfulness, mindful breathing, and finding peace in every step.
The following is brilliant and touching documentary of his life: https://www.youtube.com/watch?v=DRObW9noiVk