How Descartes fashioned a “method” to repel even the strongest and most radical forms of doubt, with the cogito argument as its foundation.

For Descartes body is purely geometrical. So how does he understand features we can perceive, like color, and causation between bodies?

How René Descartes’ understanding of his own intellectual project evolved across his lifetime.

A look at the political and religious ferment that made up the historical context of philosophy in 17th century France and the Netherlands.

In this interview we learn more about the Republic of Letters: its importance for the history of ideas, it geographic breadth, who was involved, and the contributions of figures including Leibniz and Hartlib.

How scholars around Europe created an international network of intellectual exchange. As examples we consider the activities of Mersenne, Peiresc, Leibniz, Calvet, and Hartlib.

What is Enlightenment, anyway?

We finish our look at philosophy in the Reformation era with an interview about Galileo's use of a revolutionary technology: the telescope.

The philosophical issues at the heart of the notorious condemnation of Galileo and Copernican astronomy.

Though most famous for his role in persecuting Galileo, Robert Bellarmine was a central figure of the Counter-Reformation, especially in his political thought.