Then lest he may, prevent.

4 seconds sound clip from the Julius Caesar (1953) movie soundboard.

You can hear this line at 00:29:26 in the DVD version of the movie.

Quote context

[...]

- The abuse of greatness is when it disjoins remorse from power.

- And, to speak truth of Caesar, I have not known when his affections swayed more than his reason.

- But 'tis a common proof that lowliness is young ambition's ladder, whereto the climber upward turns his face,

- But when he once attains the upmost round, he then unto the ladder turns his back, looks in the clouds, scorning the base degrees by which he did ascend.

- So Caesar may.

- Then lest he may, prevent.

- And, since the quarrel will bear no color for the thing he is, fashion it thus, that what he is, augmented, would run to these and these extremities.

- And therefore think him as a serpent's egg which, hatched, would, as his kind, grow mischievous, and kill him in the shell.

- The taper burneth in your closet, sir.

- Searching the window for a flint, I found this paper thus sealed up, and I am sure it did not lie there when I went to bed.

[...]