Where in Corinthians does Paul talk about wisdom and foolishness?

Paul, about A.D. 55, wrote a practical letter to the church at Corinth, from the city of Esphesus, addressing many issues. Corinth was close to Athens where the atmosphere was dominated by egoists who paraded themselves as philosophers. The spirit of Athens had penetrated the church in Corinth. Paul contrasts the wisdom of God with the wisdom of the unbelieving world in 1 Corinthians 3:19 "For the wisdom of this world is foolishness with God. For it is written, He taketh the wise, that they are vain."