I have always been fascinated with the idea of the dark and light side of the Force. Rather than seeing it as a question good and evil, I see one single element similar to the Taoist model of Yin and Yang, which I wanted to depict in this image - Both sides being opposite but also complementary and essential to each other, one not being able to exist without the other. Control and balance over both sides is necessary to achieve piece.
Like in Yin and Yang - there is always some dark in lightness and lightness in dark. And like Luke and Vader, both sides are rooted in one another.