No passion so effectually robs the mind of all its powers of acting and reasoning as fear.Edmund Burke
Man is the only animal capable of reasoning, though many others possess the faculty of memory and instruction in common with him.Aristotle
Once you eliminate the impossible, whatever remains, no matter how improbable, must be the truth.Arthur Conan Doyle
In questions of science, the authority of a thousand is not worth the humble reasoning of a single individual.Galileo Galilei