I want to discuss a theory whether Uchiha Madara is still alive or not and I have some written evidence. Please tell me whether you agree or not. If you guys have read chapter 385, please take a look at page 5. Sasuke asked Itachi who was the third person from Uchiha clan that helped him out the night he wiped out the whole Uchiha clan. He said that it was Uchiha Madara. When Sasuke hears that, he said that the founding father (Uchiha Madara) would be dead by now. Itachi replied by saying that he is very much alive. On page 16, Sasuke asked Itachi who is Madara. On page 17, Itachi replied by saying ( a man whose eyes tamed nine-tails and controlled it like pet, my accomplice and my teacher. The only person in history to learn the sharingan's final secret, an invincible immortal. That's who Uchiha Madara is.)
I know that most of you have alreary read this part, I am just pointing out several important keywords that some of you might have missed.
None of us know what is the final secret to Sharingan, so it can be a powerful jutsu that kept him alive up to now or it allows him to exchange body just like Orochimaru. Itachi even pointed out that Madara is an invincible immortal.
I don't want to discuss who is Tobi because it might end up in arguement. He might be Madara or even Obito because he have Sharingan, thats why there is no point to discuss about it.
Please tell me your opinion about this theory. If there is a mistake in my words, please feel free to point it out.