Enlightenment is nothing but your becoming light, your inner being becoming light.
Perhaps you are aware that the physicists say that if anything moves with the speed of light, it becomes light--because the speed is so great that the friction creates fire. The thing is burned, there is only light. The material disappears, only immaterial light remains.
Enlightenment is the experience of an explosion of light within you.
Perhaps your desire to be enlightened is moving with the speed of light, like an arrow, so that your very desire, your very longing becomes a flame, an explosion of light. There is nobody who becomes enlightened, there is only enlightenment. There is only a tremendous sunrise within you.
I must have come across hundreds of mystics describing it as if suddenly thousands of suns have risen within you. That is a common expression in the mystic's language, in all languages, in different countries, in different races.
Enlightenment simply means an experience of your consciousness unclouded by thoughts, emotions, sentiments. When the consciousness is totally empty, there is something like an explosion, an atomic explosion. Your whole insight becomes full of a light which has no source and no cause. And once it has happened, it remains. It never leaves you for a single moment; even when you are asleep, that light is inside. And after that moment you can see things in a totally different way. After that experience, there is no question in you.