But it is, you know, a sacrifice required for the future of the human race.

7 seconds sound clip from the Dr. Strangelove movie soundboard.

You can hear this line at 01:31:37 in the Blu-ray version of the movie.

Quote context

[...]

- Also, when they go down into the mine, everyone would still be alive.

- There will be no shocking memories, and the prevailing emotion will be one of nostalgia for those left behind...

- Combined with a spirit of bold curiosity for the adventure ahead. Ha!

- Doctor, you mentioned the ratio of 10 women to each man. Now, wouldn't that necessitate the abandonment of the so-called monogamous sexual relationship? I mean, as far as men were concerned?

- Regrettably, yes.

- But it is, you know, a sacrifice required for the future of the human race.

- I hasten to add that since each man will be required to do prodigious service along these lines...

- The women will have to be selected for their sexual characteristics, which will have to be of a highly stimulating nature.

- I must confess, you have an astonishingly good idea there, Doctor.

- Thank you, sir.

[...]