As Batman realized when he set out on his crusade, nothing so strikes terror into the criminal mind as the shape and shadow of a huge bat.

11 seconds sound clip from Batman (1966) - The Penguin's a Jinx (S1E4) TV Series.

You can hear this line at 00:23:10 in the Blu-ray version of the movie.

Quote context

[...]

- My, oh, my, if you'd seen what I saw.

- You see Dick and I were off fishing.

- You really know as much about it as I do. You've read it in the papers.

- Perhaps you'd like to wander over there, and ask Commissioner Gordon.

- The origin of the Batcostume, ladies and gentleman, is simple.

- As Batman realized when he set out on his crusade, nothing so strikes terror into the criminal mind as the shape and shadow of a huge bat.

- I'm so delighted you could come.

- Our host, Mr. Bruce Wayne. Head of the famous philanthropic Wayne foundation.

- You don't say.

- Gosh, what's the matter with that gorgeous girl?

[...]