可愛い子には旅させよ((諺)) Spare the rod and spoil the child.
子はかすがいChildren are a link [bond] between husband and wife.
し【子】
1〔子供〕a child;〔息子〕a son
第一子をもうける
have one's first child
2〔子爵〕a viscount
ね【子】
〔十二支の一つ〕the Rat (the first of the twelve signs of the Chinese zodiac);〔方角〕north;〔時刻〕the hour of the Rat (midnight or the hours between 11:00 p.m. and 1:00 a.m.)