I'm going to copy-and-paste something I came across a few years ago, because it fits so perfectly here now that Justice Stevens is retiring. With Obama in the White House and both houses of Congress with Democrat majorities, I'll go out on a limb here and predict that the next nominee will make the retiring "most liberal justice" look like Barry Goldwater.
The founding document of this nation is a legal CONTRACT. This is a point that Supreme Court Justice Antonin Scalia keeps making time and time again in his public speaking. "How," he once asked an audience rhetorically, "do you write a moderate contract?" And if the courts can decide that the words in a contract can mean whatever they want them to mean, then the contract isn't worth the paper it's written on:
If we're picking people to draw out of their own conscience and experience a 'new' Constitution, we should not look principally for good lawyers. We should look to people who agree with us. When we are in that mode, you realize we have rendered the Constitution useless.