For my father, as you know, has had many wives and mistresses, and many children by them.

6 seconds sound clip from the Alexander the Great (1956) movie soundboard.

You can hear this line at 00:38:10 in the Blu-ray version of the movie.

Quote context

[...]

- Flattery comes easily to you, too.

- Does Alexander need flattery?

- Truth.

- Why did you come here?

- To find out if there will be hate between us.

- Once, when I was much younger...

- Much?

- Very much.

- My father took a new woman into the house. I went to him and spoke out.

- For my father, as you know, has had many wives and mistresses, and many children by them.

- There will be hate between us.

- As I said, I was young and did not understand my father.

- Why I asked must there always be new rivals for the throne?

- He threw back his head, laughed, and he said: 'My boy, if I surround you with competitors, you will have all the more reason to surpass them in merit.'

[...]