And from henceforth, when you are over-earnest with your Brutus, he'll think your mother chides, and leave you so.

9 seconds sound clip from the Julius Caesar (1953) movie soundboard.

You can hear this line at 01:33:07 in the DVD version of the movie.

Quote context

[...]

- Do what you will, dishonor shall be humor.

- Hath Cassius lived to be but mirth and laughter to his Brutus, when grief and blood ill-tempered vexeth him?

- When I spoke that, I was ill-tempered, too.

- Do you confess so much? Give me your hand.

- And my heart, too.

- O Brutus, have you not love enough to bear with me, when that rash humor that my mother gave me makes me forgetful?

- Yes, Cassius.

- And from henceforth, when you are over-earnest with your Brutus, he'll think your mother chides, and leave you so.

- Bid the commanders prepare to lodge their companies tonight.

- And come yourself, and bring Messala with you immediately to us.

- Lucius, a bowl of wine.

- I did not think you could have been so angry.

[...]