没有比父亲更了解儿子的了。
先秦 管仲《管子 大匡》：“知子莫若父，知臣莫若君。”
知子莫若父复句式；作宾语、分句；指父亲最了解自己的儿子。
No one knows a son better than his father, know daughter better than her mother.
