Daniel Berrigan — American Clergyman born on May 09, 1921,

Daniel J. Berrigan, S.J., is an American Catholic priest, counterculture peace activist, and poet... (wikipedia)

One is called to live nonviolently, even if the change one works for seems impossible.
There is no peace because the making of peace is at least as costly as the making of war - at least as exigent, at least as disruptive, at least as liable to bring disgrace and prison and death in its wake.
I don't have to prove my life. I just have to live.
You just have to do what you know is right.
A revolution is interesting insofar as it avoids like the plague the plague it promised to heal.