Martin Luther King Jr.

This civil rights leader was a pastor famous for non-violent demonstrations.  But he also was a writer and published five books. 

Authobiography by Martin Luther King Jr. and Clayborne Carson

A Testament of Hope: The Essential Writings and Speeches of Martin Luther King, Jr. by Martin Luther King and James M. Washington

Strength To Love by Martin Luther King Jr.

The other two I'm unable to find, but if you know them, please let me know. 

As a published writer he has my respect.  He had a message to give to the world and I believe he was pinnacle in making people realize civil rights were for all men (and women). 

Another person you might want to consider researching is his wife Coretta Scott.  She was a women of extraordinary talent and intelligence.  Not surprising as Martin Luther King Jr. seemed to be so grounded and had an unwavering sense to overcome the hate among men to a noble goal. 

If there was one man I'd like to have known in my life time, this one would be him.