cogito, ergo sum

Latin quotation from Descartes co·gi·to, er·go sum \ ˈkō-gi-ˌtō ˌer-gō-ˈsu̇m \

Definition of cogito, ergo sum

: I think, therefore I am

Learn More about cogito, ergo sum


Seen and Heard

What made you want to look up cogito, ergo sum? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

to provide what is needed to exist

Get Word of the Day daily email!

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!