Igor Seidl

“He who knows only his own side of the case knows little of that. His reasons may be good, and no one may have been able to refute them. But if he is equally unable to refute the reasons on the opposite side, if he does not so much as know what they are, he has no ground for preferring either opinion... Nor is it enough that he should hear the opinions of adversaries from his own teachers, presented as they state them, and accompanied by what they offer as refutations. He must be able to hear them from persons who actually believe them...he must know them in their most plausible and persuasive form.”
― John Stuart Mill, On Liberty

“Of all evil I deem you capable: Therefore I want good from you. Verily, I have often laughed at the weaklings who thought themselves good because they had no claws.”
― Friedrich Nietzsche

“Nobody deserves to be praised for goodness unless he is strong enough to be bad, for any other goodness is usually merely inertia or lack of will-power”
― Francois de La Rochefoucauld

“A written constitution is needed to protect values AGAINST prevailing wisdom.”
― Antonin Scalia, Scalia Dissents: Writings of the Supreme Court's Wittiest, Most Outspoken Justice