Here is one of my favorite quotes from Russell Kirk in A Program for Conservatives.
Conservatism, I repeat, is not an ideology. It does not breed fanatics. It does not try to excite the enthusiasm of a secular religion. If you want men who will sacrifice their past and present and future to a set of abstract ideas, you must go to Communism, or Fascism, or Benthamism. But if you want men who seek, reasonably and prudently, to reconcile the best in the wisdom of our ancestors with the change which is essential to a vigorous civil social existence, then you will do well to turn to conservative principles.