“Heroism' often consists in keeping your head in an emergency and doing the best you can with what you have instead of panicking and being shot in the tail. People who fight this way win more battles than do intentional heroes; a glory hound often throws away the lives of his mates as well as his own.”

“Your enemy is never a villain in his own eyes. Keep this in mind; it may offer a way to make him your friend. If not, you can kill him without hate — and quickly.”

“Do not confuse "duty" with what other people expect of you; they are utterly different. Duty is a debt you owe to yourself to fulfill obligations you have assumed voluntarily. Paying that debt can entail anything from years of patient work to instant willingness to die. Difficult it may be, but the reward is self-respect. But there is no reward at all for doing what other people expect of you, and to do so is not merely difficult, but impossible. It is easier to deal with a footpad than it is with the leech who wants "just a few minutes of your time, please—this won't take long." Time is your total capital, and the minutes of your life are painfully few. If you allow yourself to fall into the vice of agreeing to such requests, they quickly snowball to the point where these parasites will use up 100 percent of your time—and squawk for more! So learn to say No—and to be rude about it when necessary. Otherwise you will not have time to carry out your duty, or to do your own work, and certainly no time for love and happiness. The termites will nibble away your life and leave none of it for you. (This rule does not mean that you must not do a favor for a friend, or even a stranger. But let the choice be yours. Don't do it because it is "expected" of you.)”

“- I'm so busy doing what I must do that I don't have time for what I ought to do... and I never get a chance to do what I want to do!- Son, that's universal. The way to keep that recipe from killing you is occasionally to do what you want to do anyhow.”

“Let's skip [Mobile Infantry] tradition for a moment. Can you think of anything sillier than being fired out of a spaceship with nothing but mayhem and sudden death at the other end? However, if someone must do this idiotic stunt, do you know a surer way to keep a man keyed up to the point where he is willing than by keeping him constantly reminded that the only good reason why men fight is a living, breathing reality?"In a mixed ship [men and women] the last thing a trooper hears before a drop (maybe the last word he ever hears) is a woman's voice, wishing him luck. If you don't think this is important you've probably resigned from the human race.”

“If we can use an H-bomb--and as you said it's no checker game; it's real, it's war and nobody is fooling around--isn't it sort of ridiculous to go crawling around in the weeds, throwing knives and maybe getting yourself killed . . . and even losing the war . . . when you've got a real weapon you can use to win? What's the point in a whole lot of men risking their lives with obsolete weapons when one professor type can do so much more just by pushing a button?'Zim didn't answer at once, which wasn't like him at all. Then he said softly, 'Are you happy in the Infantry, Hendrick? You can resign, you know.'Hendrick muttered something; Zim said, 'Speak up!'I'm not itching to resign, sir. I'm going to sweat out my term.'I see. Well, the question you asked is one that a sergeant isn't really qualified to answer . . . and one that you shouldn't ask me. You're supposed to know the answer before you join up. Or you should. Did your school have a course in History and Moral Philosophy?'What? Sure--yes, sir.'Then you've heard the answer. But I'll give you my own--unofficial--views on it. If you wanted to teach a baby a lesson, would you cuts its head off?'Why . . . no, sir!'Of course not. You'd paddle it. There can be circumstances when it's just as foolish to hit an enemy with an H-Bomb as it would be to spank a baby with an ax. War is not violence and killing, pure and simple; war is controlled violence, for a purpose. The purpose of war is to support your government's decisions by force. The purpose is never to kill the enemy just to be killing him . . . but to make him do what you want him to do. Not killing . . . but controlled and purposeful violence. But it's not your business or mine to decide the purpose of the control. It's never a soldier's business to decide when or where or how--or why--he fights; that belongs to the statesmen and the generals. The statesmen decide why and how much; the generals take it from there and tell us where and when and how. We supply the violence; other people--"older and wiser heads," as they say--supply the control. Which is as it should be. That's the best answer I can give you. If it doesn't satisfy you, I'll get you a chit to go talk to the regimental commander. If he can't convince you--then go home and be a civilian! Because in that case you will certainly never make a soldier.”

“Learn to say No—and to be rude about it when necessary. Otherwise you will not have time to carry out your duty, or to do your own work, and certainly no time for love and happiness. The termites will nibble away your life and leave none of it for you. ”