過すぎたるは猶なお及およばざるが如ごとし

expression

too much is as bad as too little; the last drop makes the cup run over

A classical proverb warning that excess can be just as harmful as deficiency. Often used to caution against overdoing something, even if it is good in moderation. The phrasing is literary and somewhat formal.

• 過すぎたるは猶なお及およばざるが如ごとしというように、勉べん強きょうもやりすぎると体からだを壊こわす。

  As the saying goes, 'too much is as bad as too little' — even studying too hard can ruin your health.

• 親しん切せつも度どを過すぎると、過すぎたるはなお及およばざるがごとしだ。

  Even kindness, when taken too far, becomes a case of 'too much of a good thing.'