When you realize the nature of mind, layers of confusion peel away. You don't actually "become" a buddha, you simply cease, slowly, to be deluded. And being a buddha is not being some omnipotent spiritual superman, but becoming at last a true human being.
Source: Sogyal Rinpoche in The Tibetan Book of Living and Dying, HarperCollins Publishers, 1993, p. 53
Contributed by: Zaady