We know that if you pull a pendulum 30°…
Page 167 We know that if you pull a pendulum 30° to the right, it'll swing back until it's 30° to the left. Same principles drive everything in this world. That degree to which you will act like an animal is the exact agree to which you were starved enough to bring up your animal instinct. You must take a closer look at what lies between the two extremes which is the center and where piece lies. It is the extremes that take the energy.
— from Fuel (Energy)