Skepticism

There is no harm in doubt and skepticism, for it is through these that new discoveries are made. - Richard Feynman 


Mr. Feynman does not qualify his statement whether he is talking about ideas, or facts, or principles or theories. Skepticism is good except except over your well thought out principles, because it can only lead to mediocrity at best and insanity at worst.


(Other posts on Principles)