Unser ganzes Elend kommt vom Mangel an Zivilcourage.
literally: All our misery comes from a deficiency in civil courage.
adapted translation: All our suffering comes from a deficiency to stand up for our beliefs.
explaining why he defected the Soviet Bloc, as quoted by Egon Vacek in Die Flucht des Atomforschers, Die Zeit, October 29, 1965, Nr. 44.