Do not Bodies and Light act mutually upon one another; that is to say, Bodies upon Light in emitting, reflecting, refracting and… — Isaac Newton Copy Share Image
Are not gross bodies and light convertible into one another; and may not bodies receive much of their activity from the particles… — Isaac Newton Copy Share Image
Nothing which consists of corporeal matter is absolutely light, but that is comparatively lighter which is rarer, either by its own nature,… — Johannes Kepler Copy Share Image
