Foucault: What is power?
“It seems to me that power must be understood in the first instance as the multiplicity of force relations immanent in the sphere in which they operate and which constitute their own organization; as the process which, through ceaseless struggles and confrontations, transforms, strengthens, or reverses them; as the support which these force relations find in one another, thus forming a chain or a system, or on the contrary, the disjunctions and contradictions which isolate them from one another; and lastly, as the strategies in which they take effect, whose general design or institutional crystallization is embodied in the state apparatus, in the formulation of the law, in the various social hegemonies.
Power is everywhere; not because it embraces everything, but because it comes from everywhere.
And “Power,” insofar as it is permanent, repetitious, inert, and self-reproducing, is simply the over-all effect that emerges from all these modalities, the concatenation that rests on each of them and seeks in turn to arrest their movement. One needs to be nominalistic, no doubt: power is not an institution, and not a structure; neither is it a certain strength we are endowed with; it is the name that one attributes to a complex strategical situation in a particular society.
Should we turn the expression around, then, and say that politics is war pursued by other means? If we still wish to maintain a separation between war and politics, perhaps we should postulate rather that this multiplicity of force relations can be coded — in part but never totally — either in the form of “war,” or in the form of “politics”; this would imply two different strategies (but the one always liable to switch into the other) for integrating these unbalanced, heterogeneous, unstable, and tense force relations.”
Michel Foucault, The History of Sexuality, Volume 1, pp. 92-93