Can you please explain why Gandhi's "Quit India" speech was important?

Gandhi delivered his "Quit India" speech on August 8, 1942. In the speech, he emphasized his belief in ahimsa, a Sanskrit word meaning "not to injure," and dedicated himself to non-violence to achieve Indian independence from Great Britain. He said: 

"Ours is not a drive for power, but purely a nonviolent fight for India’s independence. In a violent struggle, a successful general has been often known to effect a military coup and to set up...

Gandhi delivered his "Quit India" speech on August 8, 1942. In the speech, he emphasized his belief in ahimsa, a Sanskrit word meaning "not to injure," and dedicated himself to non-violence to achieve Indian independence from Great Britain. He said: 

"Ours is not a drive for power, but purely a nonviolent fight for India’s independence. In a violent struggle, a successful general has been often known to effect a military coup and to set up a dictatorship. But under the Congress scheme of things, essentially nonviolent as it is, there can be no room for dictatorship. A non-violent soldier of freedom will covet nothing for himself, he fights only for the freedom of his country."

This speech is important because the All-India Congress Committee had decided on a policy to end British rule in India immediately, and they recognized Gandhi as the leader in this campaign. He gave he gave two "Quit India" speeches, one in English and one in Hindi, to launch this non-violent campaign for Indian independence. These speeches mark the beginning of this campaign. However, the leaders of the movement were jailed less than 24 hours after he gave this speech.