One of my favorite quote from MLK is "Injustice anywhere is a threat to justice everywhere". MLK inspired many blacks during the civil rights movement. His nonviolent attitude helped blacks get their rights. My favorite quote from Dalai Lama is "If you can, help others; if you cannot do that, at least do not harm them".
Dalai and MLK greatly influenced their society, but many of their philosophies have been neglected these days.