Dr. Alan Grant did not like children, did not trust computers, and did not believe, even after the raptors and the brachiosaurus had made his skepticism obsolete, that dinosaurs and human beings belonged on the same island. He was the rare blockbuster hero who spent much of his own franchise being proven right about how badly the whole enterprise would go, saved less by bravado than by a weary, watchful decency that made audiences trust him anyway. That same mixture of doubt and quiet moral seriousness ran through the 50 years of work turned in by the actor who played him. Sam Neill, who died July 13 at his home in Sydney at the age of 78, spent his career being the smartest, wariest person in rooms full of submarines, storms, spies, and dinosaurs, and somehow made wariness look like a virtue.