A brilliant mind, and an excellent jurist. Looking at the body of work, it is clear that he made many great contributions to American Jurisprudence.
Unfortunately, there is also "Dred Scott," and while it can be fairly said, as a reviewer below has done, that "the law is the law," and while I would further state that it is manifestly unfair to judge someone by the standards of a society a century hence, it is nonetheless a decision which taints a fine legacy.