This document discusses two topics: 1. The superiority of man over other animals. It notes that while humans share many physical structures and diseases with animals, humans can digest a wider variety of foods and have better eyesight. Most importantly, humans can think, learn, use language, and transmit ideas while animals rely on instincts. 2. The role of heredity and environment in shaping a person. It describes Jose Rizal's intelligent and well-educated family background that provided him intellectual capacity. The injustices against Filipinos during his time also gave him the opportunity to develop and challenge abuses, allowing him to become a hero.