First, isn't she lovely is about the miracle and response to the birth of a child. Anyway, a lot of the cannon, from Superstition to Higher Ground from Living for the City to I Wish, he wrote across human experience. His love songs were pretty good too and I don't have your aversion to them.
A close cousin of that one, in terms of message and feel is You Haven't Done Nothing, which is a rejection of political rhetoric without action, as Superstition is a rejection of blind belief that enslaves. Village Ghetto Land is a head shaking look at the poverty and its impact in the inner city. Black Man rings the bell of minority contributions and a cautionary note. Higher Ground is a philosophical declaration in the face of what's swirling around him. Other songs with a social conscience include Jesus Children of America, Misstra Know it All, Have a Talk With God, Cash In Your Face, Race Babbling, It's Wrong (Apartheid) to name a few.I do like the funkiness of Superstition.