20 Chapter 2
It was an eventful three years, with Descartes witnessing the
coronation of one emperor, the Catholic Ferdinand II, and pos-
sibly participating in the battle to dethrone a rival claimant to
the throne, the Protestant Frederick of Bohemia. By the time he
returned to France, in 1622, Descartes had seen a good part of
Central Europe, experienced war as a soldier, made significant
progress as a mathematician, and probably learned some Dutch
and German as well.
Still, Descartes remained restless. After little more than a
year in France, part of which he spent in Paris, Descartes was
off again to continue his geographical and intellectual wander-
ings. He wrote to his older brother, Pierre, in March 1623 to
announce his plans to travel to Italy, “a voyage beyond the Alps
[being] of great utility for learning about business, acquiring
some experience of the world, and forming some habits . . . not
had before.” If such a trip did not make him richer, he added,
“at least it would make [me] more capable.”
10
In the end, he did
not depart until September, after settling some affairs, including
selling off some of his inherited properties.
Descartes went to Italy through Switzerland, taking time to
explore what was for him an exotic land. As his earliest biog-
rapher Adrien Baillet, whose La Vie de monsieur Descartes was
published in 1691, describes the journey,
It would have been easy for him to find in Basel, Zurich, and other
cities philosophers and mathematicians capable of talking with him.
But he was more curious to see the animals, the waters, the moun-
tains, and the air of each region, with its weather, and generally what-
ever was furthest from human contact, in order better to know the
nature of those things that seem the least known to ordinary scholars
[au vulgaire des sçavans].
11
Sometime before the winter of 1624, Descartes was in Rome.
His itinerary also took him to Venice, Florence, and possibly