Extremism in the defense of Liberty is no vice. And . . . moderation in the pursuit of Justice is no virtue. — Barry Goldwater

First they came for the Communists, but I was not a Communist so I did not speak out. Then they came for the Socialists and the Trade Unionists, but I was neither, so I did not speak out. Then they came for the Jews, but I was not a Jew so I did not speak out. And when they came for me, there was no one left to speak out for me. — Martin Niemoeller, From the Kirchenverwaltung der Evangelischen Kirche in Hessen and Darmstadt

All that is essential for the triumph of evil is that good men do nothing — Edmund Burke
Nobody made a greater mistake than he who did nothing because he could only do a little. — Edmund Burke

If we make peaceful revolution impossible, we make violent revolution inevitable — John F. Kennedy