You also, O son ...

You also, O son Brutus. [Lat., Et tu, Brute fili.]
 Julius Caesar

Quotes from the same author

The Celts were fearless warriors because they wish to inculcate this as one of their leading tenets, that souls do not become extinct, but pass after death from one body to another...
 Julius Caesar
Men's minds tend to fear more keenly those things that are absent.
 Julius Caesar
I have lived long enough both in years and in accomplishments.
 Julius Caesar
Cowards die many times before their actual deaths.
 Julius Caesar
I came, I saw, I conquered.
 Julius Caesar