This article written by Andrew Coyne is worth reading.
What I believe in are a set of principles having to do with the freedom of the individual, the usefulness but not infallibility of markets, and the legitimate but limited role of the state. There are, in brief, a few things we need government to do, based on well-established criteria on which there is a high degree of expert consensus. The task is simply to get government to stick to those things, rather than waste scarce resources on things that could be done as well or better by other means: that is, government should only do what only government can do.