RALEIGH, N.C. — Dr. Martin Luther King Jr.'s

youngest daughter spent her father's birthday speaking in Raleigh.

The Rev. Bernice A. King was the keynote speaker at North Carolina State University's annual MLK Commemoration at Stewart Theatre, located in N.C. State's Talley Student Center.

The theme of King's message was aspiring others to live "on purpose," like her father. During one of Dr. King's final speech, he spoke about wanting to live a long life, but he was more concerned about how he lived that life and what he did to contribute to the well-being of society.

King encouraged the audience Thursday to be leaders and avoid trying to fit in. She asked the audience to imagine if her father was only interested in fitting in and the status quo.

King has written

"Hard Questions, Heart Answers,"

a collection of her sermons and speeches addressing issues such as race, religion and social and economic justice. She is also working on a second book,

"The Father I Never Knew: And the Father I Now Know."