507 – “Two possibilities exist: Either we are alone in the Universe or we are not. Both are equally terrifying.”

–Arthur C Clarke [See Source Notes about Attribution]

Quote Number:  88

Source: Kaku, Michio. Visions : How Science Will Revolutionize the Twenty-First Century. Anchor: New York. 1998.

Source Notes: I have not been able to confirm an original source for this quote, although it is exclusively attributed to Clarke.

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