Carl Sagan Quotes
If you wish to make an apple pie from scratch, you must first invent the universe. 
Tweet
Apple | Scratch | Invent | Universe |
comments powered by Disqus
A central lesson of science is that to understand complex issues (or even simple ones), we must try to free our minds of dogma and to guarantee the freedom to publish, to contradict, and to experiment. Arguments from authority are unacceptable.
- Carl Sagan
Widespread intellectual and moral docility may be convenient for leaders in the short term, but it is suicidal for nations in the long term. One of the criteria for national leadership should therefore be a talent for understanding, encouraging, and making constructive use of vigorous criticism.
- Carl Sagan