"Opinions are formed in a process of open discussion and public debate, and where no opportunity for the forming of opinions exists, there may be moods -moods of the masses and moods of individuals, the latter no less fickle and unreliable than the former -but no opinion."

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If I tell you that I would be disobeying the god and on that account it is impossible for me to keep quiet, you won't be persuaded by me, taking it that I am ionizing. And if I tell you that it is the greatest good for a human being to have discussions every day about virtue and the other things you hear me talking about, examining myself and others, and that the unexamined life is not livable for a human being, you will be even less persuaded.

— Socrates