The will is a beast of burden. If God mounts it, it wishes and goes as God wills if Satan mounts it, it wishes and goes as Satan wills Nor can it choose its rider... the riders contend for its possession.

Summary

This quote portrays the will as a metaphorical beast of burden that can be controlled by two opposing forces, God and Satan. It suggests that the will has no independent agency and instead follows the bidding of whichever force mounts it. The quote also emphasizes that the will cannot choose its rider; rather, the riders (God and Satan) engage in a constant struggle for control over it. Ultimately, it highlights the concept of spiritual warfare and the idea that external forces greatly influence human desires and actions.