Nowhere are our calculations more frequently upset than in war. - Titus Livius

Passions are generally roused from great conflict.

For he considered that, in many cases, but especially in war, mere appearances have had all the effect of realities; and that a person, under a firm persuasion that he can command resources, virtually has them; that very prospect inspiring him with hope and boldness in his exertions.

All things will be clear and distinct to the man who does not hurry; haste is blind and improvident.