And I have come to the unalterable conclusion that man is unfit, as yet, to receive such knowledge, such almost limitless power.

9 seconds sound clip from the Forbidden Planet (1956) movie soundboard.

You can hear this line at 01:07:35 in the Blu-ray version of the movie.

Quote context

[...]

- Perhaps I do not choose to be dictated to in my own world.

- Dr. Morbius, a scientific find of this magnitude has got to be under United Planet supervision. No one man could be allowed to monopolize it.

- For the past two hours I've been expecting you to make exactly that asinine statement.

- Just one moment, commander.

- For close on 20 years now I've been constantly and I hope dispassionately, considering this very problem.

- And I have come to the unalterable conclusion that man is unfit, as yet, to receive such knowledge, such almost limitless power.

- Whereas Morbius, with his artificially expanded intellect is now ideally suited to administer this power for the whole human race.

- Precisely, doctor.

- Such portions of the Krell science, as I may from time to time deem suitable and safe, I shall dispense to Earth. Other portions I shall withhold.

- And in this I shall be answerable exclusively to my own conscience and judgment.

[...]