beginning~ending

physical~spiritual

compression~tension

planned~spontaneous

position~momentum

particle~wave

association~cognition

signal~propagation

energy~matter

experiment~theory

local~nonlocal

beginning~ending

gravitation~radiation

complementarity~contradiction

motion~stillness

power~stamina

human~robot

gravity~mass

fusion~fission

gravity~radiation

acceleration~boson

light~vision

outside~inside

actual~virtual

wave~particle

brain~neuron

human~alien

yogasana~pranayama

physical~mental

aethetics~meaning

future~past

CD~levels

mythos~logos

recycle~synthesize

element~system

squigglecross~paradigm