Leonardo da Vinci, Pathfinder of Science

Leonardo da Vinci, Pathfinder of Science is by Henry S. Gillette, with pictures by the author. The author's note says many facets of Leonardo's extraordinary personality will be missing, and that the author has tried to include that he was also a man of humor and a prophet whose vision extended far beyond his times. Piero is said to have started to back out of the room in fright when Leonardo laid a hand on his shoulder, and to have said "Have mercy on me!" on seeing the horrible fire-breathing creature. The text says Piero had now realized that Leonardo might have a rare talent.

Isabella d'Este, who still wanted Leonardo at her court, is said to have sent many a letter and messenger in the following years to bring Leonardo back. The text says Leonardo received the last sacraments at his bedside, that an entry in his notes reads "While I thought I was learning to live, I have been learning how to die," and that he died on May 2, 1519.