A friend of mine once put it succinctly: “Physics is all about findingout which variables you know and which variable you want, and then searching through your formula sheet for an equation that has all of those letters in it.”
Explaining that, for those who immediately liked physics in high school, this was what they liked about it.
When G&L went to college he began to find that what interested him was the picture that began to emerge of how the universe worked. Hence this terrific blog. Here's G&L on the most important idea in science according to Feynman, who said: I believe it is the atomic hypothesis (or the atomic fact, or whatever you wish to call it) that all things are made of atoms—little particles that move around in perpetual motion, attracting each other when they are a little distance apart, but repelling upon being squeezed into one another.
(Those who love physics for the fun of hunting for the variable will be aggrieved, very aggrieved.)