Here is a reliable direct link, with a printable pdf link at the end:
http://www.edwardtufte.com/tufte/lea_04
Links to articles from Metropolis and Fortune mentioned in the interview:
http://www.edwardtufte.com/tufte/metropolis_0199
http://www.edwardtufte.com/tufte/fortune_97
And a more recent interview, the Feynman-Tufte Principle:
http://www.edwardtufte.com/tufte/si_05
-- staff