Modern wars are seldom fought without hatred between nations; this serves more or less as a substitute for hatred between individuals.

Kind-hearted people might of course think there was some ingenious way to disarm or defeat an enemy without too much bloodshed, and might imagine this is the true goal of the art of war. Pleasant as it sounds; it is a fallacy that must be exposed: War is such a dangerous business that the mistakes which come from kindness are the very worst.

Two qualities are indispensable: first, an intellect that, even in the darkest hour, retains some glimmerings of the inner light which leads to truth; and second, the courage to follow this faint light wherever it may lead.

Only the element of chance is needed to make war a gamble, and that element is never absent.

We must evaluate the political sympathies of other states and the effect war may have on them. To assess these things in all their ramifications and diversity is plainly a colossal task. Rapid and correct appraisal of them clearly calls for the intuition of a genius; to master all this complex mass by sheer methodical examination is obviously impossible. Bonaparte was quite right when he said that Newton himself would quail before the algebraic problems it could pose.

The very nature of interactions is bound to make it unpredictable.

Pursue one great decisive aim with force and determination. The bloody solution of the crisis, the effort for the destruction of the enemy's forces, is the first-born son of war. Only great and general battles can produce great results. Blood is the price of victory.