I'm getting ready to teach myself calculus with the ultimate goal of then trying to learn as much advanced physics I can in about a year's time. I've heard conflicting views about how hard this stuff is. One book said it takes two years of calculus before one can understand Schrodinger's equation. Michio Kaku, on the other hand, says physics gets easier as one goes along. I have a feeling though that he was saying that because he was throwing a sales' pitch to people to get involved in science. Another friend of mine said calculus is easy. I understand the question is rather meaningless, but how hard is calculus and advanced physics? I realize its meaningless because you can't really compare it to anything but I would still like to hear some ideas. I put this in the quantum m category because it specifically references Schro equation.