I'm sure we're all familiar with his iconic "I have a dream" speech, but another example of his work from the early days of the Civil Rights movement is equally as important.
In April, 1963, from a jail cell in Birmingham, Alabama where he was in custody for his participation in non-violent protests, Reverend King penned a letter to his fellow clergymen explaining his cause and seeking their support.
Letter from a Birmingham Jail
The eloquence and grace of his words are inspiring.
... I have no fear about the outcome of our struggle in Birmingham, even if our motives are at present misunderstood. We will reach the goal of freedom in Birmingham and all over the nation, because the goal of America is freedom. Abused and scorned though we may be, our destiny is tied up with America's destiny. Before the pilgrims landed at Plymouth, we were here. Before the pen of Jefferson etched the majestic words of the Declaration of Independence across the pages of history, we were here. For more than two centuries our forebears labored in this country without wages; they made cotton king; they built the homes of their masters while suffering gross injustice and shameful humiliation -and yet out of a bottomless vitality they continued to thrive and develop. If the inexpressible cruelties of slavery could not stop us, the opposition we now face will surely fail. We will win our freedom because the sacred heritage of our nation and the eternal will of God are embodied in our echoing demands...