“A man should always have these two rules in readiness. First, to do only what the reason of your ruling and legislating faculties suggest for the service of man. Second, to change your opinion whenever anyone at hand sets you right and unsettles you in an opinion, but this change of opinion should come only because you are persuaded that something is just or to the public advantage, not because it appears pleasant or increases your reputation.”

“Opinion is death. Opinion is plague. When it comes to web site management, trusting your gut is the last thing you should do.”

“I have always strenuously supported the right of every man to his own opinion, however different that opinion might be to mine. He who denies to another this right, makes a slave of himself to his present opinion, because he precludes himself the right of changing it.”

“You should seek your enemy, you should wage your war - a war for your opinions. And when your opinion is defeated, our honesty should still cry triumph over that!”

“So long as you do no harm to another, change your opinion once in a while. Contradict yourself without being embarrassed. This is your right. It doesn't matter what others think -because that's what they will think, in any case.”

“If your conscious tells you something is wrong or something is right, don't ask for a second opinion.”