Quotes from Carl Sagan

It is of interest to note that while some dolphins are reported to have learned English - up to fifty words used in correct context - no human being has been reported to have learned dolphinese.

In science it often happens that scientists say, 'You know that's a really good argument; my position is mistaken', and then they would actually change their minds and you never hear that old view from them again. They really do it. It doesn't happen

Science is not only compatible with spirituality; it is a profound source of spirituality.

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