[One's] inability to invalidate your hypothesis is not at all the same thing as proving it true. — Carl Sagan Copy Share Image
![“[One's] inability to invalidate your hypothesis is not at all the same thing as proving it true.” quote by Carl Sagan](https://sms4smile.com/quotes/img-quotes/cfb/carl-sagan-160_hypothesis_one-s-inability-to-invalidate-your-hypot_1619200.jpg)