In the world of high-tech industry, the money becomes the main point for a lot of people. Take your company, puff it up a bit, take it public, cash out, retire. And then what? I have kept my company private and intend to continue doing that because what I am really interested in is the long-term intellectual achievement that our product represents.

The Mathematica system and the language it embodies will be around as long as I am. I think it will be a continuing fixture in the intellectual landscape. That is important to me.