Here a are a few more MLK quotes regarding the use of time for justice:

Interviewer: Would you call yourself a gradualist, in terms of integration?

MLK: “I think not. The word gradualism…is so often an excuse for escapism and do-nothingism which ends up in stand-stillism.”

http://www.youtube.com/watch?v=gcmlsYVla7g&feature=player_embedded

When you are right, you cannot be too radical; when you are wrong you cannot be too conservative.

To ignore evil is to become an accomplice to it.

Any religion which professes to be concerned with the souls of men and is not concerned with the slums that damn them, the economic conditions that strangle them, and the social conditions that cripple them, is a dry-as-dust religion.

Church and State

The church must be reminded that it is not the master or the servant of the state, but rather the conscience of the state. It must be the guide and the critic of the state, and never its tool. If the church does not recapture its prophetic zeal, it will become an irrelevant social club without moral or spiritual authority. – Martin Luther King, Jr., Strength to Love, 1963.