To your point of the beholder: I find/found the ideas of quantum mechanics beautiful, but I find the Hamiltonian formulation of classical mechanics much more b

To your point of the beholder: I find/found the ideas of quantum mechanics beautiful, but I find the Hamiltonian formulation of classical mechanics much more beautiful. I see QM as sort of messy... ...until second quantization (and some Dirac-notation formulations of perturbation theory). Those I enjoyed.