pearls of wisdom
From Longman Dictionary of Contemporary Englishpearls of wisdompearls of wisdomKNOW somethingwise remarks – used especially when you really think that someone’s remarks are slightly stupid Thank you for those pearls of wisdom, Emma. → pearlExamples from the Corpuspearls of wisdom• Do you have any other pearls of wisdom for us?• This meant he would occasionally cast in my direction the pearls of wisdom he had accumulated in nine months on the job.