The Basic Teaching of Advaita

Advaita says there's one only without a second. And who is that one? Tatthamas, you are that. But our experience seems to be contrary to that. How can you say, I alone am? There's so many other things. So this is the basic teaching of Advaita. Vibhata means false appearance and luxury appearance. If ego doesn't exist, everything doesn't exist. This illusory appearance appears only to us as ego. When we don't rise as ego as in sleep, there's no illused appearance. Only in waking and dreaming there's all this illusory appearances. That's why Bhagavan says, for example