Sadly he did not include the whole quote from David. David was not speaking of every person, but instead he was speaking of those who do not believe there is a God, these he calls fools.
Ps. 14
To the chief Musician,
A Psalm of David.
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.
2 The LORD looks down from heaven upon the sons of men to see if any understand, if
any seek God.
3
All have turned away,
they have together become corrupt; there is
no one who does good,
not even one.
4 Will
the workers of iniquity never learn?
They devour
My people like bread;
they refuse to call upon the LORD
'
They' are the fools, the atheists, these are the ones who don't do good.