Ay, Casca.

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

You can hear this line at 00:16:57 in the DVD version of the movie.

Quote context

[...]

- Seldom he smiles, and smiles in such a sort as if he mocked himself, and scorned his spirit that could be moved to smile at anything.

- Such men as he be never at heart's ease whilst they behold a greater than themselves, and therefore are they very dangerous.

- I rather tell thee what is to be feared than what I fear, for always I am Caesar.

- Come on my right hand, for this ear is deaf, and tell me truly what thou think'st of him.

- Would you speak with me?

- Ay, Casca.

- Tell us what hath chanced today, that Caesar looks so sad.

- Why, you were with him, were you not?

- I should not then ask Casca what had chanced.

- Why, there was a crown offered him, and, being offered him, he put it by with the back of his hand, thus, and then the people fell a-shouting.

[...]