These men were able to give the counsel they gave because they were operating at an enormous psychological distance from the people who would be maimed and killed by the weapons systems that would result from the ideas they communicated to their sponsors. The lesson, therefore, is that the scientist and technologist must, by acts of will and of the imagination, actively strive to reduce such psychological distances, to counter the forces that tend to remove him from the consequences of his actions. He must -- it is as simple as this -- think of what he is actually doing. He must learn to listen to his own inner voice. He must learn to say "No!"

Finally, it is the act itself that matters. When instrumental reason is the sole guide to action, the acts it justifies are robbed of their inherent meanings and thus exist in an ethical vacuum. I recently heard an officer of a great university publicly defend an important policy decision he had made, one that many of the university's students and faculty opposed on moral grounds, with the words: "We could have taken a moral stand, but what good would that have done?" But the moral good of a moral act inheres in the act itself. That is why an act can itself ennoble or corrupt the person who performs it. The victory of instrumental reason in our time has brought about the virtual disappearance of this insight and thus perforce the delegitimation of the very idea of nobility.
"Computer Power and Human Reason: From Judgment To Calculation" (1976)
You may be 38 years old, as I happen to be. And one day, some great opportunity stands before you and calls you to stand up for some great principle, some great issue, some great cause. And you refuse to do it because you are afraid... You refuse to do it because you want to live longer... You're afraid that you will lose your job, or you are afraid that you will be criticized or that you will lose your popularity, or you're afraid someone will stab you, or shoot at you or bomb your house; so you refuse to take the stand.

Well, you may go on and live until you are 90, but you're just as dead at 38 as you would be at 90. And the cessation of breathing in your life is but the belated announcement of an earlier death of the spirit.
Those who lead the country into the abyss
Call ruling too difficult
For ordinary men.

Ah, what an age it is
When to speak of trees is almost a crime
For it is a kind of silence about injustice!
"To Posterity" (1939)
Modern Western culture seemingly has entered a failure-mode unprecedented in history, where we have nobody willing to go first, to stand out, to do what needs to be done, to enact the changes everyone else wants. We've run out of empathetic iconoclasts—people who see the suffering of distant/distributed others, and for whom that aggregate suffering outweighs the risk that might come to the comfortable-life-in-obscurity of all their closer companions. The people with hearts that bleed for their fellow citizens, but then don't shrivel back at the thought of their companions being the ones who end up bleeding.
Tagscowardice
Most civilization is based on cowardice. It's so easy to civilize by teaching cowardice. You water down the standards which would lead to bravery. You restrain the will. You regulate the appetites. You fence in the horizons. You make a law for every movement. You deny the existence of chaos. You teach even the children to breathe slowly. You tame.
The real damage is done by those millions who want to 'survive.' The honest men who just want to be left in peace. Those who don’t want their little lives disturbed by anything bigger than themselves. Those with no sides and no causes. Those who won’t take measure of their own strength, for fear of antagonizing their own weakness. Those who don’t like to make waves—or enemies. Those for whom freedom, honour, truth, and principles are only literature. Those who live small, mate small, die small. It’s the reductionist approach to life: if you keep it small, you’ll keep it under control. If you don’t make any noise, the bogeyman won’t find you. But it’s all an illusion, because they die too, those people who roll up their spirits into tiny little balls so as to be safe. Safe?! From what? Life is always on the edge of death; narrow streets lead to the same place as wide avenues, and a little candle burns itself out just like a flaming torch does. I choose my own way to burn.
"Sophie Scholl - The Last Days"
Every time we witness an injustice and do not act, we train our character to be passive in its presence and thereby eventually lose all ability to defend ourselves and those we love.
Seeing the Tea Party protests as oligarch theater was the easy part. What we didn't bargain for was how different the American ecosystem is from Russia's: Here, if your reporting causes some serious butt-hurt on powerful interests and they fight back with their PR machine, you can be sure that you will be abandoned by all your journalist "colleagues" and your liberal "comrades." One whiff of gunpowder, and those folks are like peasants melting into the countryside.
He who joyfully marches to music rank and file, has already earned my contempt. He has been given a large brain by mistake, since for him the spinal cord would surely suffice. This disgrace to civilization should be done away with at once. Heroism at command, senseless brutality, deplorable love-of-country stance and all the loathsome nonsense that goes by the name of patriotism, how violently I hate all this, how despicable and ignoble war is; I would rather be torn to shreds than be a part of so base an action. It is my conviction that killing under the cloak of war is nothing but an act of murder.