An excerpt posted on Edge, from physicist Freeman Dyson's new book, Many Colored Glass: Reflections on the Place of Life in the Universe, expounds on his self-described heretical theories as a scientist. Words of wisdom from an 82-year-old heretic whose scientific ideas bridge many disciplines: "The main lesson that I would like them to take home is that the long-range future is not predetermined. ... All our fashionable worries and all our prevailing dogmas will probably be obsolete in fifty years."
Much of the essay relates to global warming, but there's also a nice anecdote at the end about advice Dyson gave to Francis Crick some 60 years ago. It's always nice to know that even heretics can be wrong sometimes.