Shakyamuni Buddha also began his path as an ordinary person and eventually attained enlightenment. He was not born a Buddha. In the biography of Milarepa, one disciple said to Milarepa, “Master, you must be an emanation of Vajrapani or some Buddha.” Milarepa immediately retorted, “I know you want to show your respect to me by saying that. Yet it is a serious defamation to the Dharma because it indicates that you don’t believe that the Dharma can transform an ordinary person into someone like me.” Therefore, the issue is not whether one has the capability but the determination to set about obtaining that capability from now on.

- Quote from The Right View, "The Three Supreme Methods"