The Austrian artist Werner Horvath illustrates a quotation by Carl von Clausewitz: 

"War is a Chameleon", mixed media on canvas, 50 x 70 cm, 2011.

“War is thus more than a true chameleon, because it changes its nature to some extent in each concrete case. It is also, however, when it is regarded as a whole and in relation to the tendencies that dominate within it, a fascinating trinity composed of primordial violence, hatred, and enmity, which are to be regarded as a blind natural force; the play of chance and probability, within which the creative spirit is free to roam; and its element of subordination, as an instrument of policy, which makes it subject to pure reason.” (Carl von Clausewitz: "Vom Krieg")