These are primary Buddhist documents from Buddhist teachers of the past who taught in the Zen and Mahayana lineages as well as teachings by current Zen teachers.
The Four Noble Truths & The Eightfold Noble Path
Karaniya Metta Sutta: The Buddha’s Words on Loving-Kindness
Zazengi: Rules for Zazen by Eihei Dogen
Heart of Great Perfect Wisdom Sutra
The Maha Prajnaparamita Hridaya Sutra
Genjokoan: Actualizing the Fundamental Point
Sandōkai: Harmonious Song of Difference and Sameness
Guidepost of Silent Illumination
Hsin Hsin Ming: On Trust in the Heart
Song of the Precious Mirror Samadhi
The Platform Sutra of Hui-Neng
The next two articles are by Taigen Dan Leighton, who is an author, scholar, and translator, as well as a fully authorized teacher in Shunryu Suzuki Roshi’s Soto Zen lineage and a Dharma heir of Tenshin Reb Anderson. He still teaches online through the Institute of Buddhist Studies of the Graduate Theological Union, Berkeley. He brings an interesting perspective to our sitting practice.
Hongzhi, Dogen and the Background of Shikantaza by Taigen Dan Leighton
Zazen as Enactment Ritual by Taigen Dan Leighton