It is a way the gods have to give with one hand and take with two.
5 seconds sound clip from the Helen of Troy (1956) movie soundboard.
You can hear this line at 00:46:46.106 in the Blu-ray version of the movie.
Quote context
[...]
- No. If even one Trojan dies on the walls, I'm a failure.
- One is a man. The other, just a boy, I think. Paris, let him be so always. Never let him grow old.
- It is a way the gods have to give with one hand and take with two.
- Oh, no. This is not goodbye. You shall still be with me across the sea.
- And always young, Paris, remember?
- What is remembered is forever young.
- My lady, I ask that you remove yourself...
[...]