"The Bible is vital to Equiano's own spiritual development as a Christian, but it is also crucial that he is inducted into a specific ... The The Life of Olaudah Equiano quotes below all refer to the symbol of The Bible. ... Chapter 10" https://www.litcharts.com/lit/the-life-of-olaudah-equiano/symbols/the-bible
It explains simply <em>what </em>the circulatory system does, and then it tells the reader what Arturo will be discussing <em>about</em> the circulatory system.
