Histories

Thus Mardonius smoothed Xerxes' resolution and stopped. The rest of the Persians held their peace, not daring to utter any opinion contrary to what had been put forward; then Artabanus son of Hystaspes, the king's uncle, spoke. Relying on his position, he said,

“O king, if opposite opinions are not uttered, it is impossible for someone to choose the better; the one which has been spoken must be followed. If they are spoken, the better can be found; just as the purity of gold cannot be determined by itself, but when gold is compared with gold by rubbing,[*](i.e. rubbing against the touchstone, which would be stained by pure gold.) we then determine the better.