Augustine of Hippo

"What is your own opinion? What people do you call happy?" He [the psalmist] would not say, "Happy is the people whose strength is in their own mind." If he had said this, he would, it is true, distinguish that people from the former that made happiness consist in that visible and bodily good fortune, but he would not yet have passed beyond all the vanities and lying follies, for the same Scriptures teach elsewhere: "Cursed be everyone that places his hope in humankind." Therefore, he ought not to place it in himself, because he himself is human. Thus, in order to pass beyond the boundaries of all vanities and lying follies and to place happiness where it truly exists, he says, "Happy is the people whose God is the Lord."