What do conservatives stand for?
One popular narrative is that conservatives cling to tradition and resist change. There is an element of truth to this description in that conservatives do value tradition–albeit not for its own sake. Rather, out of the conviction that systems and institutions which have proven themselves over the course of generations should not be hastily cast aside in favor of the untested (and typically ill-fated) vogue. But ultimately, this is a feature of conservativism rather than its essence.
Conservativism is a response to progressivism. The point of divergence between them relates to the (im)perfectability of man–a centuries-long debate with theological origins but profound political implications:
Progressives tend to view history in a more-or-less linear fashion. It is held that as a result of mankind’s essential goodness (or rationality), or else as a result of immutable suprahuman forces, humanity is on a trajectory towards some “end of history” (the notion of progress is incomprehensible absent an end-state. For instance, what would constitute “progress” on an infinite line?).
Insofar as this (implicit or explicit) climax is viewed as utopian in nature (as is usually the case), progressives believe it is their responsibility to hasten this outcome, or even instantiate their ideal in the here-and-now. They typically view governments as a means to achieve these ends, appealing to some conception of the Good which the state is supposed to realize, often by means of some presumed universally-superior mode of societal arrangement. It is this impulse which undergirded the Enlightenment, Marxism, and myriad other revolutionary movements—and its negation forms the basis for conservativism.