Wars happen because the ones who start them think they can win.

Wars are stupid and they can start stupidly.

You see, when a nation threatens another nation the people of the latter forget their factionalism, their local antagonisms, their political differences, their suspicions of each other, their religious hostilities, and band together as one unit. Leaders know that, and that is why so many of them whip up wars during periods of national crisis, or when the people become discontented and angry. The leaders stigmatize the enemy with every vice they can think of, every evil and human depravity. They stimulate their people’s natural fear of all other men by channeling it into a defined fear of just certain men, or nations. Attacking another nation, then, acts as a sort of catharsis, temporarily, on men’s fear of their immediate neighbors. This is the explanation of all wars, all racial and religious hatreds, all massacres, and all attempts at genocide.

War against a foreign country only happens when the moneyed classes think they are going to profit from it.

It is easier to start a war than to end it.

War has been the excuse people have made throughout history to take something away from others that didn't belong to them. And it's a never ending cycle. First one group takes away something from the other, then the other wants to take it back, only if they succeed, they take much more. And then it starts all over again. War is caused by greed.

Launching a nice little war to divert national attention was a gambit no less appealing to nineteenth-century politicians than it is to their present-day counterparts.

Of course it's tempting to close one's eyes to history, and instead speculate about the roots of war in some possible animal instinct: as if, like the tiger, we still had to kill to live, or, like the robin redbreast, to defend a nesting territory. But war, organized war, is not a human instinct. It is a highly planned and cooperative form of theft. And that form of theft began 10,000 years ago when the harvesters of wheat accumulated a surplus and the nomads rose out of the desert to rob them of what they themselves could not provide. The evidence for that, we saw, in the walled city of Jericho and its prehistoric tower... That is the beginning of war.

Equally important to not appearing "trigger-happy" is not to appear prone to either accidents or miscalculations. Who wants to live in the 1960's and 1970's in the same world with a hostile strategic force that might inadvertently start a war? Most people are not even willing to live with a friendly strategic force that may not be reliably controlled. The worst way for a country to start a war is to do it accidentally, without any preparations. That might initiate an all- out "slugging match" in which only the most alert portion of the forces gets off in the early phase. Both sides are thus likely to be clobbered," both because the initial blow was not large enough to be decisive and because the war plans are likely to be inappropriate. To repeat: On all these questions of accident, miscalculation, unauthorized behavior, trigger-happy postures, and excessive destructiveness, we must satisfy ourselves and our allies, the neutrals, and, strangely important, our potential enemies. Since it is almost inevitable that the future will see more discussion of these questions, i will be important for us not only to have made satisfactory preparations, but also to have prepared a satisfactory story. Unless every-body concerned, both laymen and experts, develops a satisfactory image of strategic forces as contributing more to security than insecurity it is most improbable that the required budgets, alliances, and intellectual efforts will have the necessary support. To the extent that people worry about our strategic forces as themselves exacerbating or creating security problems, or confuse symptoms with the disease, we may anticipate a growing rejection of military preparedness as an essential element in the solution to our security problem and a turning to other approaches not as a complement and supplement but as an alternative. In particular, we are likely to suffer from the same movement toward "responsible" budgets pacifism, and unilateral and universal disarmament that swept through England in the 1920's and 1930's. The effect then was that England prematurely disarmed herself to such an extent that she first almost lost her voice in world affairs, and later her independence in a war that was caused as much by English weakness as by anything else.

Wars begin through greed and vanity and are continued through the insanity of nationalism in which the boundaries of a land replace God.

You want a war? You better believe you got one!

All conflicts are essentially economic in nature…Money is behind every war

Why did nations turn so often to war in the belief that it was a sharp and quick instrument for shaping international affairs when again and again the instrument had proved to be blunt or unpredictable? This recurring optimism is a vital prelude to war. Anything which increases the optimism is a cause of war. Anything which dampens that optimism is a cause of peace.

A Government which has decided on embarking on the hazardous and terrible enterprise of war must at the outset present a one-sided case in justification of its action, and cannot afford to admit in any particular whatever the smallest degree of right or reason on the part of the people it has made up its mind to fight. Facts must be distorted, relevant circumstances concealed, and a picture presented which by its crude colouring will persuade the ignorant people that their Government is blameless, their cause is righteous, and that the indisputable wickedness of the enemy has been proved beyond question. A moment's reflection would tell any reasonable person that such obvious bias cannot possibly represent the truth. But the moment's reflection is not allowed; lies are circulated with great rapidity. The unthinking mass accept them and by their excitement sway the rest. The amount of rubbish and humbug that pass under the name of patriotism in war-time in all countries is sufficient to make decent people blush when they are subsequently disillusioned.