Psalm 14:1 The fool hath said in his heart, There is no God. They are corrupt, they have done abominable works, there is none that doeth good.
Proverbs 9:10 The fear of the Lord is the beginning of wisdom: and the knowledge of the holy is understanding.
I don't know if I would call them "intelligent" people.
1 Corinthians 1:26-29
25Because the foolishness of God is wiser than men; and the weakness of God is stronger than men.
26For ye see your calling, brethren, how that not many wise men after the flesh, not many mighty, not many noble,
are called:
27But God hath chosen the foolish things of the world to confound the wise; and God hath chosen the weak things of the world to confound the things which are mighty;
28And base things of the world, and things which are despised, hath God chosen,
yea, and things which are not, to bring to nought things that are:
29That no flesh should glory in his presence.
Maybe intelligent "after the flesh"....
Which is what I think you meant in the first place.