He can neither bless nor curse the power that moves him, for he does not know from where it comes.
9 seconds sound clip from the The Ten Commandments (1956) movie soundboard.
You can hear this line at 01:46:05.275 in the Blu-ray version of the movie.
Quote context
[...]
- In the mocking whisper of the wind he hears the echoing voices of the dark.
(voices echoing on wind) Moses! Moses! Moses! Moses! Moses!
- He cannot cool the burning kiss of thirst upon his lips, nor shade the scorching fury of the sun.
- He can neither bless nor curse the power that moves him, for he does not know from where it comes.
- Can you think of nothing else?
- I don't know. I've never tried!
[...]