If a man hasn't discovered something that he will die for, he isn't fit to live.

You have to keep moving forward

"When I speak of love I am not speaking of some sentimental and weak response. I am not speaking of that force which is just emotional bosh. I am speaking of that force which all of the great religions have seen as the supreme unifying principle of life. Love is somehow the key that unlocks the door which leads to ultimate reality."

There is a type of constructive nonviolent tension that is necessary for growth

Cowardice is submissive surrender to circumstances.

And when this happens, when we allow freedom ring, when we let it ring from every village and every hamlet, from every state and every city, we will be able to speed up that day when all of God's children, black men and white men, Jews and Gentiles, Protestants and Catholics, will be able to join hands and sing in the words of the old Negro spiritual: Free at last! Free at last! Thank God Almighty, we are free at last!

To put it in the terms of St. Thomas Aquinas: An unjust law is a human law that is not rooted in eternal law and natural law.