I am both Persian and Greek, and I know both worlds.

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

You can hear this line at 01:19:30 in the Blu-ray version of the movie.

Quote context

[...]

- This empire for which you now fight is old and corrupt and begs destruction.

- The world we live in begs destruction.

- No. It needs a new force, a new idea.

- And that force, that idea has come to Asia, as it came to Greece.

- And like Greece, it's here. You see it, but you don't understand it.

- Alexander.

- I am both Persian and Greek, and I know both worlds.

- Perhaps the Athens in which we believe is old and corrupt, too, but its ideas and glories are worth keeping alive in the hearts of men.

- Whose glories? Athens' or Alexander's?

- Both, if needs be.

- A Persian victory will not do this. Alexander's will.

- If you could not see it then when he spoke in Athens, you must see it now.

[...]