Both matter and radiation possess a remarkable duality of character, as they sometimes exhibit the properties of waves, at other times those of particles. Now it is obvious that a thing cannot be a form of wave motion and composed of particles at the same time - the two concepts are too different.
Werner HeisenbergRelated topics
character different form matter now radiation thing timesRelated quotes
The effort really to see and really to represent is no idle business in face of the constant force that makes for muddlement. The great thing is indeed that the muddled state too is one of the very sharpest of the realities, that it also has color and form and character, has often in fact a broad and rich comicality.
Henry James