A wise son maketh a glad father: but a foolish man despiseth his mother.
A wise son maketh a glad father (since he honours his father): but a foolish man despiseth his mother - and so makes her sad (the opposite of 'maketh glad'): this is supplied in Proverbs 10:1 - "A wise son maketh a glad father: but a foolish son (is) the heaviness of his mother." One particular in which children show themselves "wise" or else "foolish," and so can gladden or else sadden their parents, is by giving or withholding due honour. "A foolish man" (Hebrew, kªciyl (H3684) 'aadaam (H120)); rather, as the adjective in Hebrew is not usually placed before the noun, a fool that is a grown man. No age or state exempts children from honouring their parents. Grown young men are sometimes apt to look with some contempt on their mothers, because of the weakness of the feminine mind.