Originality is also very important to a writer. And all of the writers I've mentioned, of course, are original, but it's important to me that every book that I do be really a completely fresh and new look at the world. And of course, that makes it frightening to start a new book because you can't really depend upon what you've done with previous books.

I picked such seemingly disparate essays, I thought it was important to say what was the guiding principle in the selection rather than focus on any one essay. I reached for some principle that had been subconscious in me and lifted it into consciousness. Authenticity and sincerity were the most important unifying principles of all these apparently different essays.

I think people all over the institution recognize that different ways of understanding are valuable. Artists may think in a different way than biologists or chemists, but you can learn something from that. It is true that the arts at MIT don't have the same amount of funding or same status as the sciences or engineering.

While people brood, time skips ahead without looking back.

Scientists will forever have to live with the fact that their product is, in the end, impersonal.

In a world of fixed future, life is an infinite corridor of rooms, one room lit at each moment, the next room dark but prepared. We walk from room to room, look into the room that is lit, the present moment, then walk on. We do not know the rooms ahead, but we know we cannot change them. We are spectators of our lives.

I've taken a philosophical position on e-mail. Although I think it's a wonderful communication technology, and it has a lot of good uses, it is abused quite a lot.