in qvo vniversa alimentorvm materia perspicve ac plane proponitvr, proposita diligenter envcleatvr, envcleata firmissimis argumentis fulcitur, quaestionibusque tum eruditis, tum profundis, quasi certa quadam regula passim obseruata, elucidatur : opvs magnae et infinitae doctrinae, omnibvs tvm theoreticis, tvm practicis, apprime vtile ac necessarium