Sad news of the death, at 88, of one of the greatest thinkers and inventors of the past century. Although the headlines all proclaim him as the inventor of the mouse, that was only one of his many achievements that were more profoundly influential. Among the many other things that he invented or played a significant role in inventing were the first working hypertext (and hence the Web), the word processor, the Internet (his lab was the second node on its forerunner, the ARPANET), email, video conferencing, windowing systems like the Mac and Windows, and much else besides. A modest and inspiring genius whose vision of augmenting, not replacing, human intellect reverberates loudly to this day.