“A wise man never loses anything, if he has himself.”

“If a man never contradicts himself, the reason must be that he virtually never says anything at all.”

“The fool doth think he is wise, but the wise man knows himself to be a fool.”

“The fool doth think he is wise, but the wise man knows himself to be a fool.”

“Learn from me that a wise man who has heard a criminal accusation related with so many absurd particulars ceases to be wise when he makes himself the echo of what he has heard, for if the accusation should turn out to be a calumny, he would himself become the accomplice of the slanderer.”

“Man is wise … when he recognises no greater enemy than himself.”

“He had the satisfied countenance of a man who has never succeeded in boring himself.”

“The busy man is never wise and the wise man is never busy.”

“That man is best who sees the truth himself. Good too is he who listens to wise counsel. But who is neither wise himself nor willing to ponder wisdom is not worth a straw.”

“A wise man travels to discover himself.”