The students in his advanced quantum mechanics class watched in awe
as [Cooper] improvised Feynman diagrams on the blackboard. Quantum
mechanics describes our universe on the very smallest, subatomic scales,
where the “stuff” in our universe takes on characteristics of both waves and
particles. Energy and matter have a dual particle-like and wave-like nature.
Get it? No? That’s OK—neither do most physicists.
The Jazz of Physics by Stephon Alexander, page 34.