侍于君子有三愆:言未及之而言谓之躁,言及之而不言谓之隐,未见颜色而言谓之瞽。· There are three errors to which they who stand in the presence of a man of virtue and station are liable. They may speak when it does not come to them to speak. This is called rashness. They may not speak when it comes to them to speak. This is called concealment. They may speak without looking at the countenance of their superior. This is called blindness.