"We may repeat here that these pages propose mainly to show one thing: that progress ought to be based on principle, while our modern progress is mostly based on precedent. We go, not by what may be affirmed in theory, but by what has been already admitted in practice. That is why the Jacobites are the last Tories in history with whom a high-spirited person can have much sympathy. They wanted a specific thing; they were ready to go forward for it, and so they were also ready to go back for it. But modern Tories have only the dullness of defending situations that they had not the excitement of creating. Revolutionists make a reform, Conservatives only conserve the reform. They never reform the reform, which is often very much wanted."
January 1, 1970
https://en.wikiquote.org/wiki/What's_Wrong_with_the_World