In its worse forms, conservatism is a matter of “I hate strangers and anything that’s different.” But in its better forms, conservatism simply says that the structures of society, both civil and political, religious and so on, are the result of a long series of trial-and-error experiments by millions of human beings, not only all over the world, but through time. And that you should toss out received wisdom only very carefully. Obviously there are some ideas that were around for centuries that were not good (slavery comes to mind). But when people have been doing something for a millennium or two, there is probably a reason. And you better be pretty careful before you just throw it out.