Essential teachings, brilliant musings, and provocative theories from three of history’s greatest thinkers.

The Road to Inner Freedom: The seventeenth-century Dutch philosopher Baruch Spinoza views the ability to experience rational love of God as the key to mastering the contradictory and violent human emotions.

The Art of Philosophizing: These groundbreaking essays by Bertrand Russell deal with “the art of reckoning” in the fields of mathematics, logic, and philosophy. With great clarity and simple exposition, Russell gets to the core of philosophical inquiry and analysis.

Pilgrimage to Humanity: Albert Schweitzer discusses his philosophy of culture, the course of his life, his ministry to human needs in Africa, the idea of reverence for life, the ideal of world peace, the significance of liberal Christianity, and the lives, world-views, and contributions of Johann Goethe, Johann Sebastian Bach, and Jesus of Nazareth.