English: This paper is divided into four substantive sections: (1) biography of Constantino, (2) Constantino as a linguist, (3) Constantino and language planning, and (4) Constantino as a folklorist.
Filipino: Nahahati ang papel na ito sa apat na sustantibong seksiyon: (1) talambuhay ni Constantino, (2) si Constantino bilang isang lingguwista, (3) si Constantino at pagpaplanong pangwika, at (4) si Constantino bilang poklorista.