This speech, known to high school sophomores all across America as Antony's Funeral Oration, is probably one of the most famous speeches from British literature. At the same time praising Caesar, Antony satirizes Brutus and his "honor." You'll find this speech in Julius Caesar Act III, scene 2. I'll cite a few of the lines here, and you can read the rest of the etext here at eNotes:

Friends, Romans, countrymen, lend me your ears!
I come to bury Caesar, not to praise him.
The evil that men do lives after them,
The good is oft interred with their bones;
So let it be with Caesar. The noble Brutus(85)
Hath told you Caesar was ambitious;
If it were so, it was a grievous fault,
And grievously hath Caesar answer'd it.
Here, under leave of Brutus and the rest—
For Brutus is an honorable man;(90)
So are they all, all honorable men—
Come I to speak in Caesar's funeral.
He was my friend, faithful and just to me;
But Brutus says he was ambitious,
And Brutus is an honorable man.(95)
He hath brought many captives home to Rome,
Whose ransoms did the general coffers fill.
Did this in Caesar seem ambitious?
When that the poor have cried, Caesar hath wept;
Ambition should be made of sterner stuff.(100)
Yet Brutus says he was ambitious,
And Brutus is an honorable man.

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