Its intelligence had expanded. It now knew how to escape.

— Professor Walgate (Kynaston Reeves)

5 seconds sound clip from the Fiend Without a Face (1958) movie soundboard.

You can hear this line at 00:58:18.425 in the Blu-ray version of the movie.

Quote context

[...]

- I was helpless, but whom could I tell? Who would believe such a fantastic story?

- I could sense the presence of the fiend there in the room with me, growing more powerful with each succeeding day.

- My one desire was to destroy the thing, but I possessed no means of projecting my thought to do so.

- Then I could hear it. Was it possible that there were more than one?

- I was unable to stop them. They were now drawing power from the atomic station.

- Its intelligence had expanded. It now knew how to escape.

- And then followed these horrible deaths and Gibbons' madness.

- I had to know what I had done. I had to see one of the bodies. I went to the mayor's tomb.

- I now know that I have created a mental vampire, a fiend that needs to drain the intellect to survive and multiply.

(Knocking At Door) I'll get it.

[...]