Microsoft Chairman Bill Gates believes that if he had been able to watch physicist Richard Feynman lecture on physics in 1964 his life might have played out differently.

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However, Mr. Gates, who is also well known for his sharp and varied intellectual interests and his philanthropic commitment to education, said this week that he had purchased the rights to videos of seven lectures that Dr. Feynman gave at Cornell University called “The Character of Physical Law,” in an effort to make them broadly available via the Internet.