I've known for years that I want to study mathematics as I have a great passion for it, but I'm not quite sure whether or not I also want to study physics. Today's (theoretical) physics thrills me more than 'today's math problems'. What I'd eventually really want to do is studying reality at its most fundamental. I am a theorist by heart, I'm really fascinated by the big questions physicists are trying to answer. I'm asking for, and I'd be very pleased with, any advice about the differences in opportunities when studying either mathematics or both maths and physics, given that I want to become a theoretical physicist and that I prefer mathematics as a single study. Also, I'd most likely love doing research in and contemplating about certain fields of theoretical physics, so I'm willing to dedicate myself to it. I continually hear about how much better education is at top universities like Harvard and MIT. Is this true, as regards to especially physics as in that case I'd really want to go and study there? I've lived in the Netherlands for my entire life and I don't quite have the right preparatory training in order to get admitted to university yet. Here we have a somewhat laborious 'program' for people who want to get admitted to an undergrad mathematics and/or physics study. I've got numerous reasons to back up my willingness to study abroad, perhaps mostly because my English would develop so much more. So for this reason, what should I do to get myself admitted into an undergrad mathematics and/or physics program at a foreign top university, given the fact that I can acquire whatever knowledge required that I don't yet possess within this (school)year? I'd be happy with all advice and/or corrections you may have!