Look, this flat ground we're standing on could have been at the bottom of the sea a million years ago. And a million years from now, it could be the interior of a huge mountain.

13 seconds sound clip from the The Time Machine (1960) movie soundboard.

You can hear this line at 00:14:56 in the Blu-ray version of the movie.

Quote context

[...]

- If it's occupying the same space, why can't I feel it?

- You must remember that the space you're putting your hand through is today's space. You can't put your hand into the space of tomorrow.

- Space is space! It doesn't change! The same space that's here now should be here in 100 or even 1000 years.

- No! Time changes space!

- No.

- Look, this flat ground we're standing on could have been at the bottom of the sea a million years ago. And a million years from now, it could be the interior of a huge mountain.

- All right, suppose what you say is true.

- What do you expect us to do with such a contraption?

- Contraption?

- For my part, I intend taking a journey into the future.

[...]