Carl Sagan Quotes: Avoidable human misery is more often caused not so much by stupidity as by ignorance, particularly our ignorance about ourselves. ...

Avoidable human misery is more often caused not so much by stupidity as by ignorance, particularly our ignorance about ourselves. (Carl Sagan)

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Carl Sagan Quotes: Avoidable human misery is more often caused not so much by stupidity as by ignorance, particularly our ignorance about ourselves.

Carl Sagan Quotes: Avoidable human misery is more often caused not so much by stupidity as by ignorance, particularly our ignorance about ourselves.

Carl Sagan Quotes: Avoidable human misery is more often caused not so much by stupidity as by ignorance, particularly our ignorance about ourselves.

Carl Sagan Quotes: Avoidable human misery is more often caused not so much by stupidity as by ignorance, particularly our ignorance about ourselves.

Carl Sagan Quotes: Avoidable human misery is more often caused not so much by stupidity as by ignorance, particularly our ignorance about ourselves.

Carl Sagan Quotes: Avoidable human misery is more often caused not so much by stupidity as by ignorance, particularly our ignorance about ourselves.

Carl Sagan Quotes: Avoidable human misery is more often caused not so much by stupidity as by ignorance, particularly our ignorance about ourselves.

Carl Sagan Quotes: Avoidable human misery is more often caused not so much by stupidity as by ignorance, particularly our ignorance about ourselves.

Carl Sagan Quotes: Avoidable human misery is more often caused not so much by stupidity as by ignorance, particularly our ignorance about ourselves.

Carl Sagan Quotes: Avoidable human misery is more often caused not so much by stupidity as by ignorance, particularly our ignorance about ourselves.

Carl Sagan Quotes: Avoidable human misery is more often caused not so much by stupidity as by ignorance, particularly our ignorance about ourselves.

Carl Sagan Quotes: Avoidable human misery is more often caused not so much by stupidity as by ignorance, particularly our ignorance about ourselves.

Carl Sagan Quotes: Avoidable human misery is more often caused not so much by stupidity as by ignorance, particularly our ignorance about ourselves.

Carl Sagan Quotes: Avoidable human misery is more often caused not so much by stupidity as by ignorance, particularly our ignorance about ourselves.

Carl Sagan Quotes: Avoidable human misery is more often caused not so much by stupidity as by ignorance, particularly our ignorance about ourselves.