The scenario that Cassius uses to convince Brutus that Caesar is not as great as others seem to think he is, was that Caesar once cried like a girl when he was ill. This scene occurs in the famous play written by Shakespeare, which goes by the name Julius Caesar.
According to scholars, this play was written somewhere around 1599. It is one of the many plays that Shakespeare has written, based on some true events of the Roman history. It is a play that is widely taught to students of literature at all levels, because of its popularity and importance in the world of literature.