In the science fiction book Insurgent by Veronica Roth, the main theme is Courage. There are so many events in this book that are courageous, whether dangerous or emotional. Veronica Roth is showing the courageous side of human nature, but also so many more- romantic, heroism, cowardice, rebellious, etc. One of the most Courageous things Tris does through out this book, is risking her life, for others safety and well-being. Tris is being selfless, but at the same time she is exceedingly courageous. The theme developed throughout the story because someone was always do something courageous. One specific event was when Tris turns herself into the Candor because of her Divergence so that the other divergent wouldn't have to suffer. This was a very courageous and selfless choice.
Tris isn't the only courageous one in this book- every character has their moment of fame. Tobias (Four) is extremely courageous. He travels to the factionless to confront his mother after years of him thinking she was dead. This was so courageous, it definitely helped develop the theme of courage. Even though he is very courageous, he can be cowardly, as is everyone. He keeps secrets from Tris because he is afraid of what might happen if he tells her, but so does Tris. When Tris goes against Tobias to save the data from the Erudite, she is being cowardly, but courageous as well because again she is risking her life for the safety of others.
All of the battles-physical or emotional-throughout the book help to develop the themes throughout the book and it's events. Society in this case is just torn. Half, or the loyalists are helping and supporting Tris's and everyone's choices and the other half-or the traitors- are totally against getting a new government system and getting rid of the faction system. In this case, the author believes humans are flawed. Humans make good and bad choices, no matter the size. In this book many of theses decisions made are courageous, helping s develop the theme of courage.