Expressions (phrases, clauses, etc.), Godan verb with 'su' ending
a wise man keeps some of his talents in reserve; one shouldn't show off; the person who knows most often says least; a skilled hawk hides its talons
Proverb
Also written 能有る鷹は爪を隠す【のうあるたかはつめをかくす】、脳ある鷹は爪を隠す【のうあるたかはつめをかくす】