Opticks: Or a Treatise of the Reflections, Refractions, Inflections and Colours of Light

Philosophy 101: From Plato and Socrates to Ethics and Metaphysics, an Essential Primer on the History of Thought

The Obstacle is the Way Expanded 10th Anniversary Edition: The Timeless Art of Turning Trials into Triumph

The Principia: The Authoritative Translation and Guide: Mathematical Principles of Natural Philosophy

The Stoic Challenge: A Philosopher's Guide to Becoming Tougher, Calmer, and More Resilient

Newton's Philosophy of Nature: Selections from His Writings

Objectivism: The Philosophy of Ayn Rand

Newton's Revised History of Ancient Kingdoms: A Complete Chronology

How to Live a Good Life: A Guide to Choosing Your Personal Philosophy

Observations upon the Prophecies of Daniel, and the Apocalypse of St. John

Letters from a Stoic

Principia: The Mathematical Principles of Natural Philosophy (Annotated)

Emancipated From Mental Slavery: Selected Sayings of Marcus Garvey

Representations on the Subject of Money

Why Marx Was Right

New Theory about Light and Colour

A Brief History of Thought: A Philosophical Guide to Living

The Chronology of Ancient Kingdoms Amended to Which Is Prefix'd a Short Chronicle From the First Memory of Things in Europe to the Conquest of Persia by Alexander the Great

How to Be Free: An Ancient Guide to the Stoic Life

Principia, Vol. II: The System of the World