"So remember to look up at the stars and not down at your feet. Try to make sense of what you see and hold on to that childlike wonder about what makes the universe exist."
"There is a very real danger that we will kill everything on this planet now that we have the technological power to do so."
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Source: A Dazzling Night in D.C. With a Brilliant Thinker by David Perlman, www.sfgate.com. March 20, 1998.
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