The boy believed you could be saved. But he doesn't know...what burns within your soul. When in your heart, you know we are the same.
Source: Warcraft III: Reign of Chaos
Note: Spoken to Grom Hellscream while fighting him and Thrall. Grom had previously struggled to control the orcish curse of bloodlust brought on by drinking Mannoroth's blood. Grom refuses to submit again, and attacks Mannoroth, killing him and ending the curse.