To be over much facetious is the accomplishment of courtiers and blemish of the wise.
In the faculty of speech man excels the brute; but if thou utterest what is improper, the brute is they superior.
Whoever interrupts the conversation of others to make a display of his fund of knowledge, makes notorious his own stock of ignorance.
Publish not men's secret faults, for by disgracing them you make yourself of no repute.
Whatever is produced in haste goes hastily to waste.
The stranger has no friend, unless it be a stranger.