Civil rights leader Martin Luther King Jr. was just 39 years old when he was assassinated 50 years ago, on April 4, 1968, but the values he stood foracceptance, equality, non-violent protesthave echoed throughout the five decades since.His speeches were bold, triumphant, and touched with King's tireless need to revise. As the perfectionist spoke, millions listened.In honor of Martin Luther King Jr. Day, here are some of the most inspiring words the activist spoke during his short life.DON'T MISS:21 of Michelle Obama's most inspiring quotes on work, success, and relationshipsSEE ALSO:13 of Maya Angelou's greatest quotes on life, success, and changeOn education:"The function of eduction is to teach one to think intensively and to think critically. Intelligence plus characterthat is the goal of true education."On standing up for what's right:"The ultimate measure of a man is not where he stands in moments of comfort and convenience, but where he stands at times of challenge and controversy."On community:"Whatever affects one directly, affects all indirectly. I can never be what I ought to be until you are what you ought to be. This is the interralated structure of reality."See the rest of the story at Business Insider Click here to read full news..