KEYWORDS: alien; astrobiology; bioastronomy; biocosmology; CETI; cognitive universalism; contact; exobiology; extraterrestrial intelligence; extraterrestrial life; Fermi Paradox; interstellar communication; plurality of worlds; SETI; supercivilization; uniqueness
It might well be the case that the universe has produced and will continue to produce countless millions of ... histories analogous to human history.... To attempt to draw ultimate conclusions about God and the universe from a few episodes of the history which has been enacted on this planet would seem to be a most hazardous if not impossible proceeding..
The point is that only a search can make empirical what is after all a very old speculation. Whether we are alone or not needs to rest on experimental search, not on a string of evolutionary inferences.
Ethical principles qua laws of nature would have to leave a sufficiently broad region undetermined for yet another level of integration to arise. This cannot be illustrated at this time because we cannot distinguish between the limits of our ignorance and the necessary outer boundaries of ethical principles. We do not have enough members in our set of mankinds for a fair sampling.
J. T. Fraser
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Philip Morrison & Giuseppe Cocconi (Nature, 19 Sep 1959)
Paul Horowitz (from an interview by David W. Swift, October 1988)
Jill Cornell Tarter