1. * English physician William Harvey spent years dissecting animals and birds.

2. 13 Galileo, I have already indicated that Hobbes had met, William Harvey, Rene Descartes; a handful of others who were part of what we think of as the modern scientific revolutionaries.

3. 27 Galileo, I have already indicated that Hobbes had met, William Harvey, Rene Descartes; a handful of others who were part of what we think of as the modern scientific revolutionaries.

4. • At least 2,500 years before English physician William Harvey discovered the circulatory system in the human body, the Bible referred to the heart as a fountain, or source, of life? —Proverbs 4:23.