An eighteenth-century-style painting of a seated queen in a richly furnished court receiving a standing philosopher, courtiers gathered around a draped table

School

Rationalists

1637 – 1716 · 3 thinkers

One wager, made three different ways in a single century. The rationalists held that the deepest truths about reality are reached by reason, not by the senses: that the mind comes equipped with ideas it did not get from experience, and that pure thought can prove substantial conclusions about God, the self, and the world. Descartes built the wager on a single certainty no doubt could shake. Spinoza pushed it to its limit and got one infinite substance he called God or Nature. Leibniz pushed it a different way and got a universe of windowless points in pre-arranged harmony. They agreed on the method and split on the world it delivered, and the argument they could not settle among themselves is the one a rival camp, the empiricists, was forming to attack from the other side.

The core claim

Before

Knowledge rests on what revelation has settled and the senses report; reason works inside those bounds

After

Knowledge rests on what reason can establish from scratch; the senses are demoted to a deceptive surface

The whole Rationalists storyThe tradition across the centuries, in the house voice→

Inside the read

Rebuilding on certainty

God or Nature

Windowless points in harmony

What they shared, where they split

The rival camp