Home
Random
Nearby
Log in
Settings
Donate
About Wikisource
Disclaimers
Search
CES1596
Joined 12 December 2011
User page
Discussion
Watch
View history
Contributions
Edit
More
Languages
What links here
Logs
View user groups
Permanent link
Page information
Edit full page
Download QR code
Ego cogito, ergo sum
.
René Descartes
,
Principia philosophiae
,
1644
.