And what he saw couldn't have been a dream... it was too real. But it couldn't have been true, either... it was too deliciously frightful.

— Narrator (Paul Frees)

9 seconds sound clip from the The Day the Earth Stood Still (1954) classic radio play.

You can hear this line at 00:30:24 in the radio play.

Quote context

[...]

- Mr. Carpenter's door was ajar and light was pouring out of his room.

- Funny... he said his light went out.

- Then Mr. Carpenter came out carrying the flashlight and stealing down the steps like a thief.

- This was peculiar. But this was adventure.

- Bobby followed Mr. Carpenter...

- And what he saw couldn't have been a dream... it was too real. But it couldn't have been true, either... it was too deliciously frightful.

- Dream or not, it was filled with darkness, stung by staccato flashes from a genuine Boy Scout flashlight...

- Flashes that activated a giant robot into knocking out his guards, so that Mr. Carpenter from the boardinghouse could get into the shed the Army had built around the spaceship.

- And dream or not, Bobby saw this Mr. Carpenter go into the spaceship.

- And then a wave of sheer terror swept over Bobby at last and he turned and ran wildly away...

[...]