'Wheel of Sharp Weapons' is an abbreviated title for 'The Wheel of Sharp Weapons Effectively Striking the Heart of the Foe.' This text is often referenced as a detailed source for how the laws of karma play out in our lives; it reveals many specific effects and their causes. A poetic presentation, the "wheel of sharp weapons" can be visualized as something we throw out or propel, which then comes back to cut us... something like a boomerang. In the same way, Dharmarakshita explains, the non-virtuous causes we create through our self-interested behavior come back to 'cut us' in future lives as the ripening of the negative karma such actions create. This, he explains, is the source of all our pain and suffering. He admonishes that it is our own selfishness or self-cherishing that leads us to