16. A little knowledge is a dangerous thing. 一知半解，害已误人。

　　17. A little labour， much health. 常常走动，无病无痛。

　　18. A little learning is a dangerous thing. 浅学寡识是件危险的事。

　　19. A little of everything， and nothing at all. 样样皆通，样样稀松。

　　20. A man is never too old to learn. 活到老，学到老。