I've known Kagan for 30 years and I don't know what her views are

All of this may be interesting, but it’s largely beside the point for a Supreme Court Justice. The justices are not really managers of people, certainly not in comparison to the dean of a major law school. Judgment, values, and politics are what matters on the Court. And here I am somewhat at a loss. Clearly, she’s a Democrat. She was a highly regarded member of the White House staff during the Clinton years, but her own views were and are something of a mystery. She has written relatively little, and nothing of great consequence…

But on the Court, Kagan will have to do something she’s not done before. Show her hand. Develop a clear ideology. Make tough votes. I have little doubt she’s up to the job, but am less clear on how she’ll do it.