Zéyann wrote:
After having seen the movie twice, I think Sidious was just telling all that to get Anakin join him. Most of it was most likely just exaggerated, some of it could be true. I personally don't think Plagueis concieved Anakin, or at least I don't WANT to believe he did so.
Also, nowhere in the movie is mentioned Plagueis is Sidious' mentor. It could have just been an ancient Sith story passed down by the lords.
The only problem is that Anakin doesn't know Palpatine is Sidious at this point. He doesn't know that when Palpatine is talking about Plagueis creating life, he knows alot more about this legend then he's letting on.
And while you're right, he never admits that Plagueis was his master in the film, it's obviously HEAVILY implied (whether it be that look of distant satisfaction as he tells the tale of how the apprentice killed Plagueis, or when he refers to "his mentor" later in the film).
As Lucas said, it's really up to interpretation. But the thing is, Palpatine wouldn't say that as a lie at that point, because Anakin has no idea he's really Sidious then.