History of the Peloponnesian War

For if they charged a man with no more but ignorance when he had spoken in vain, he might yet depart with the opinion of a fool. But when they impute corruption also, if his counsel take place, he is still suspected; and if it do not take place, he shall be held not only a fool but also void of honesty.

The commonwealth gets no good by such courses for through fear hereof it will want counsellors. And the state would do their business for the most part well if this kind of citizens were they that had least ability in speaking, for they should then persuade the city to the fewer errors.

For a good statesman should not go about to terrify those that contradict him but rather to make good his counsel upon liberty of speech. And a wise state ought not either to add unto, or, on the other side, to derogate from, the honour of him that giveth good advice, nor yet punish, nay, nor disgrace, the man whose counsel they receive not.