Unthinking respect for authority is the greatest enemy of truth.
In questions of science, the authority of a thousand is not worth the humble reasoning of a single individual.
To punish me for my contempt of authority, Fate has made me an authority myself.
Men use thought only as authority for their injustice, and employ speech only to conceal their thoughts.
I do not believe in immortality of the individual, and I consider ethics to be an exclusively human concern with no superhuman authority behind it.
Any one who in discussion relies upon authority uses, not his understanding, but rather his memory.