The whole thing was basically an experiment, Richard Feynman said late in his
career, looking back on the origins of his lectures. The experiment turned out
to be hugely successful, spawning publications that have remained definitive and
introductory to physics for decades. Ranging from the basic principles of
Newtonian physics through such formidable theories as general relativity and
quantum mechanics, Feynman's lectures stand as a monument of clear exposition
and deep insight. Timeless and collectible, the lectures are essential reading,
not just for students of physics but for anyone seeking an introduction to the
field from the inimitable Feynman.