It is graceful in a man to think and to speak with propriety, to act with deliberation, and in every occurrence of life to find out and persevere in the truth. On the other hand, to be imposed upon, to mistake, to falter, and to be deceived, is as ungraceful as to rave or to be insane.
Marcus Tullius CiceroThe authority of those who teach is often an obstacle to those who want to learn.
Marcus Tullius CiceroTake from a man his reputation for probity, and the more shrewd and clever he is, the more hated and mistrusted he becomes.
Marcus Tullius Cicero