Blackstone presumes an authority that is above the law. Lose that ... assert that man's law is "supreme" ... and the bedrock is at least disturbed, if not disregarded.
The problem is that we must judge ourselves. People have made as many claims about what the authority above the law (if such exists) says as about what the law says.
I prefer to look at the law as part of a system which controls the power of the state. Our way of doing things has been judged by history to be extremely good compared to other ways. Whether it will continue to be so, whether we can adapt to whatever new circumstances we must face, is always unknown.