"One important object of this original spectroscopic investigation of the light of the stars and other celestial bodies, namely to discover whether the same chemical elements as those of our earth are present throughout the universe, was most satisfactorily settled in the affirmative. (1909)"

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I believe that a person should take an affirmative outlook. There are always problems in life, old and new, uncertainties, and unexpected contingencies. The optimal way to deal with this is not to give up in despair, but to move ahead using the best intelligence and resources that we have to overcome adversity.

— Paul Kurtz