The Bible (King James Version)
The foundational text of Western civilization.
The Quran
The central religious text of Islam.
The Upanishads
The Upanishads on Hindu philosophy.
The Bhagavad Gita
The Bhagavad Gita on duty and devotion.
Confessions
Augustine's spiritual autobiography.
Summa Theologica
Aquinas's systematic theology.
The Imitation of Christ
The classic of Christian devotion.
The 95 Theses
Luther's 95 theses that sparked the Reformation.
Institutes of the Christian Religion
Calvin's systematic theology.
The Pilgrim's Progress
The allegorical journey of Christian.
The Varieties of Religious Experience
James on religious experience.
Mere Christianity
Lewis's defense of Christianity.
The Miracle of Mindfulness
Thich Nhat Hanh on mindfulness.