When your reasons for believing something are justified ad hoc, you are left susceptible to further discoveries undermining the rationale for that belief.
(The Pluto Files, 2009)

Neil deGrasse Tyson

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After all, what nobler thought can one cherish than that the universe lives within us all?

Neil deGrasse Tyson (Death by Black Hole, 2007)

The good thing about science is that it's true whether or not you believe in it.

Neil deGrasse Tyson

Science is something to be proud of, it allows us to understand the world inspite of ourselves.

Neil deGrasse Tyson (Interview, 2011)

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