Contemporary likeness
René Descartes
1596 – 1650
PhilosophyMathematicsRationalismEarly modern
A soldier-turned-philosopher who decided to doubt everything and see what survived.
Contemporary likeness. Based on the Frans Hals portrait, painted from life.
Why they still matter
He made method the first question of philosophy, and gave mathematics a language for space. Almost everything after him is a response.
The world they thought in
Wrote in the Dutch Republic, cautiously, in the years after Galileo's condemnation.
What they wrote
The questions they worked on
Wisdom
What is it to know that you do not know?
Made method the first question of philosophy.
Reality
What is actually there behind appearances?
Doubted everything to find what could not be doubted.
Where the thinking travelled
Each link says what kind of link it is. A documented influence and a much later echo are not the same claim, and are never presented as one.
Augustine of HippoLater echo
Arrived at the certainty of the thinking self a millennium later, by another route.
A much later restatement, not an inheritance.
Take this further
Ponderers is the historical layer. A rabbit hole brings the same question into what people are arguing about now.