Bertrand Russell: “We Think the Grass is Green”

Photographer Unknown, (The Green at the Center)

“We all start from “naive realism,” i.e., the doctrine that things
are what they seem. We think that grass is green, that stones
are hard, and that snow is cold. But physics assures us that the
greenness of grass, the hardness of stones, and the coldness of
snow are not the greenness of grass, the hardness of stones, and
the coldness of snow that we know in our own experience, but
something very different.”

-Bertrand Russell