My sister speaks truly. It is a thing of evil that should be burnt upon the plain.

Cassandra (Janette Scott)

5 seconds sound clip from the Helen of Troy (1956) movie soundboard.

You can hear this line at 01:40:11.826 in the Blu-ray version of the movie.

Quote context

[...]

- Open it! Open it! Let us look at the world again!

- The night smiles on us.

- Look, Priam.

- I was trying to tell you of it, sire. Some strange monument that the Greeks have left at our doorstep.

- Beware the Greeks bearing gifts.

- My sister speaks truly. It is a thing of evil that should be burnt upon the plain.

- I agree. The enemy doesn't give joyful presents.

- My children, this is not a gift from the Greeks, but some symbol of worship they were forced to abandon.

- Sire, the people beg permission to bring this amazing prize into the square.

- They have fought long and bravely. I cannot deny them.

- Father, please hear me. It is not the end of ruin, but the beginning.

[...]