Georg Simmel,
The American Journal of Sociology…
“ I call attention merely to the power of small states and small parties, derived from the fact that larger powers, each of which is unquestionably in itself superior to the third, come into conflict with each other. If the powers of these opponents are equal, an element which in itself is weak may, by attaching itself to the one or the other, determine the contest in the interest of the power which it favors. ”
