The Assassin's Creed series follows the centuries old battle between the Knights Templar and the Assassins. But why do they fight? Why has this battle lasted for centuries? To answer this question, one has to look beyond the actions of both factions to what motivates them.The Assassins represent rationalism, humanism, and logic; the Templars represent leadership based on blind faith. The battle between the Assassins and the Templars is really an ideological battle between rationalism and faith. But while these two ideologies seem diametrically opposed, over the course of both games we see that the dividing line between them is far smaller than it first appears.