The surfaces of three-dimensional space are distinguished from each other not only by their curvature but also by certain more general properties. A spherical surface, for instance, differs from a plane not only by its roundness but also by its finiteness. Finiteness is a holistic property.
Hans ReichenbachRelated topics
certain curvature finiteness general instance plane property roundness space surfaceRelated quotes
The laws of certain states ...give an ownership in the service of negroes as personal property.... But being men, by the laws of God and nature, they were capable of acquiring liberty-and when the captor in war ...thought fit to give them liberty, the gift was not only valid, but irrevocable.
Alexander Hamilton
As far as the surface is concerned – oil on canvas, conventionally applied – my pictures have little to do with the original photograph. They are totally painting (whatever that may mean). On the other hand, they are so like the photograph that the thing that distinguished the photograph from all other pictures remains intact.
Gerhard Richter
Art deals with profound and simple moods. Let us suppose that the artist - in this instance (the artist) Picabia - gets a certain impression by looking at our skyscrapers, our city, our way of life, and that he tries to reproduce it. He will convey it in plastic ways on the canvas, even though we see neither skyscrapers nor city on it.
Filippo Tommaso Marinetti