Natural environment sustains the life of all beings universally. Trees are referred to in accounts of the principal events of Buddha's life. His mother leaned against a tree for support as she gave birth to him. He attained enlightenment seated beneath a tree, and finally passed away as trees stood witness overhead.
— His Holiness The Dalai Lama, The Path to Tranquility by His Holiness The Dalai Lama, Renuka Singh, editor