Carl von Clausewitz Quote
Everything in war is very simple, but the simplest thing is difficult. The difficulties accumulate and end by producing a kind of friction that is inconceivable unless one has experienced war.... Countless minor incidents - the kind you can never really foresee - combine to lower the general level of performance, so that one always falls short of the intended goal....
On War (ed. Princeton University Press, 2008) - ISBN: 9781400837403
