Original: His two famous works, Teatro critico universal (1726-1739) and Cartas eruditas y curiosas, are multi-volume collections of essays that cover a range of subjects, from education, law, and medicine, to superstitions and popular beliefs.
Simplified: His two famous multi-volume collection of essays, Teatro critico universal (1726-1739) and Cartas eruditas y curiosas cover a range of subjects, from education, law, and medicine, to superstitions and popular beliefs.