"Learn the leading precognita of all things-no need to turn over leaf by leaf, but grasp the trunk hard and you will shake all the branches. Advice cherished by Samuel Johnson that that, if one is to master any subject, one must first discover its general principles."

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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. In that one sentence, you will see, there is an enormous amount of information about the world, if just a little imagination and thinking are applied.

— Richard P. Feynman